Clams that are native to China are living in the San Francisco bay. How can these clams damage the bay ecosystem?​

Answers

Answer 1

Answer:

Marine Invasive Species are animals or algae that have been translocated from their native region to California marine and estuarine waters. Invasive species are also called introduced, exotic, alien, nonindigenous or non-native.The introduction of NIS can cause harm to the ecosystem by displacing native species, becoming a human health dangerby introducing new diseases, or cause economic havoc on commercial, agricultural, or recreational activities by clogging waterways, and impacting navigation and recreation.

A prime example of the harm an invasive species can cause is Caulerpa taxifolia, also known as Killer Algae, a strain of green seaweed believed to be released from an aquarium directly into a water body or through a storm drain. The Killer Algae forms a dense carpet on any surface including rock, sand, and mud displacing native plants and animals, disrupts the natural food chain, and seriously impacting recreational and commercial fisheries.

Although Caulerpa was successfully eradicated from California marine waters, few eradications have been attempted due to perceived challenges and high cost (over $7M was expended in the case of Caulerpa).

Number of Invasive Species Statewide

The map below shows that all major harbor areas and Bays in California have received significant NIS introductions. San Francisco Bay has the highest number of non-native species, followed by the Ports of Los Angeles/Long Beach. San Francisco Bay is a hotspot for invasions because it has high recreational boating and commercial shipping traffic, a history of oyster culture, and is adjacent to a highly urbanized area. Our research found that San Francisco Bay is a hub for the spread of NIS to the rest of the West Coast.

Explanation:


Related Questions

What solution can be used to detect blood that has been cleaned or cannot be seen?

Answers

Answer:

Fluorescein is a presumptive blood test for latent bloodstain detection. It has been used in forensic applications to reveal trace amounts of blood. Traces of latent blood can be detected even after repeated cleansing of the crime scene.

Explanation:

- Eijiro <3

Which of the following does the ocean provide?

Question 1 options:
Over half the oxygen we breathe
Climate regulation
Pollution
Food and medicine

Answers

Answer:

Over half of the oxygen in the worldClimate regulationFood

The ocean provides benefits to the whole world in many forms like over half the oxygen we breathe Climate regulation and Food.

The air we breathe: The ocean produces over 1/2 of the world's oxygen and absorbs 50 instances greater carbon dioxide than our atmosphere. Climate regulation: Covering 70 percent of the Earth's surface, the sea transports warmness from the equator to the poles, regulating our weather and climate patterns. One of the primary offerings furnished via way of means of the oceans to human societies is the provisioning carrier of meals from seize fisheries and culturing operations.

What is the ocean used for?

The oceans have lengthy been used as a platform for delivery and communications. They additionally offer residing sources for meals (fisheries and aquaculture) in addition to pharmaceutical, biotechnology, and genetic products.

Thus it is clear that the ocean provides Over half the oxygen we breathe

Climate regulation and Food.

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The human hands and feet have similar types and numbers of bones. However, hands and feet are very different in their appearance. What physical differences do you notice between the hands and feet? How might these differences relate to differences in the function of these body parts? Would you expect other primates to have hands and feet differently like this? Why or why not?

Answers

Answer:

Hands have a larger range of dexterity compared to feet. Longer tendins and stronger grip strength, they are made for more intrucite tasks such as making and using tools. Feet have a larger surface area, made for holding large amount of weight, shorter bones and tendins allow for easy acceleration and no extra flesh to get in the way. Other more primitive species will not have the  feet we have due to evolution. They simply do not have the evolved sense of brain pwer hians haev in order to make tools. So they have more need for speed, grip exc. in feet to escape pradators and live day to day. Where on the other hand humans do not.

Explanation:

The metatarsals that can be found in the foot are larger than the metacarpal bones that ​are in the hands.

It should also be noted that the phalanges of the hand are larger than that of the foot. The way that the metacarpal of the thumb is built is vital for mobility and movement.

Primates have hands and feet that are different from that of humans because they use their hands and feet for grasping. They also have strong clavicles and flexible shoulder joints. This enables them to climb and grasp things firmly.

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What is the type of relationship between a rabbit and a leopard?

Answers

Answer:

Prey and Predator

Explanation:

rabbit is the prey and leopard is the predator

Answer:

Parisitism.

Explanation:

Im pretty sure the answer is parasitism because the Leopard would feed on the rabbit, meaning the leopard benifits while the rabbit would be harmed.

what do we call the actual gas or substance that causes air pollution?​

Answers

Answer:

The actual gas that causes air pollution is called a pollutant

Explanation:

Air pollution is the decrease in air quality. Air pollutants are the gases that cause air pollution.

What are pollutants?

Pollutants are harmful substances and particles that affect the quality of the environment and are man-made or natural. Fly ash from volcanic eruptions is a natural pollutant that deters the air quality.

The air pollutants like carbon monoxide, sulfur dioxide, and carbon dioxide released from the burning of fossil, coal, and vehicles alter the air quality and result in a change in weather conditions.

Therefore, the pollutants are the actual gases that cause air pollution.

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What struggles do aquatic organisms have that terrestrial ones do not?

If you are not going to actually answer the question don't even bother.

Answers

Answer:

Aquatic animals can be found in water habitats, which can be either fresh or marine. Terrestrial animals can be found exclusively in the land. Aquatic animals respire through gills or their skin. ... The main difference between aquatic and terrestrial animals is their habitat and modes of living

Explanation:

Answer:

being destroyed easily

Explanation:

aquatic organisms are faced with lots of challenges,,,eg.....oilspillage on water bodies,this prevents entry of oxgen into water hence suffocation leading to death,also growth of weeds such as water hyacinth which suck nutrientss and oxygen from water,,,also aquatic krganisms are hunted by lots of predators compared to that of terrestrial

According to fossil records, the horses that lived 50 million years ago were much smaller, weaker and slower than modern horses. Which process is most likely responsible for the changes that have led to the increased size, strength, and speed in horses?Immersive Reader (1 Point) commensalism inbreeding migration evolution by natural selection

Answers

Evolution by natural selection.  

survival of the fittest=natural selection

Which of the following increases genetic variation by forming entirely new alleles?

Natural selection
Genetic drift
Mutation
Gene flow

Answers

Answer:

gene flow

Explanation:

type of gene flow

Precipitation in Jacksonville (1961-1990
True or false

Answers

Answer:

your answer is true I believe

Answer:

True it is the precipation in Jacksonville 1961 to 1990

Myrtle the Turtle finishes a 5 meter race in 7 minutes, How far would he walk in 3.5 minutes? (Round to the
first decimal place.)

Answers

Answer:

2.5

Explanation:

3.5/(7/5)=2.5 hope this helps

13. List the advantages of glycolysis.
If oxygen is present...

Answers

Answer:

Although glycolysis doesn't require oxygen, the fate of the pyruvate molecules depends on whether oxygen is present. If oxygen isn't available, the pyruvate is converted to lactate, and no additional ATP is produced from this conversion. If oxygen is present, the pyruvates are transported into the mitochondrial matrix.

Explanation:

What type of cells are produced at the end of meiosis?

Answers

Answer:

haploids i think

Explanation:

sorry if its wrong!

the female part of the plant is called the
A. stamen

B. pistil

Answers

Answer:

B

Explanation:

Answer:

the correct answer is B. pistil

Select the false statement about the effect of lymphopenia on the immune response following administration of immunosuppressive drugs like the corticosteroids. Select one: a. The immunosuppressive effect (lymphopenia) occurs 4 to 6 hours following drug administration and significantly reduces the number of circulating lymphocytes in the blood. b. Lymphopenia decreases the ability of lymphocytes to initiate and participate in an immune response. c. Corticosteroids increase the amount of lymphoid tissue and cells in the lymph nodes and spleen. d. None of these are false.

Answers

Answer:

The correct answer is option C (Corticosteroids increase the amount of lymphoid tissue and cells in the lymph nodes and spleen).

Explanation:

Lymphopenia occurs when the white blood cell count in the bloodstream of an individual that defends the body from a harmful attack is lower than normal this could be due to different reasons, maybe the body has been previously invaded by viruses, bacterias or diseases that have already weakened the immune system, or the body is under siege from a prolonged illness. The white blood cell counts may be very low or severe which rightly indicates all is not well with the body.

Corticosteroid drugs are usually used to treat inflamed areas of the body and they cause those special defensive white blood cells in the blood cell count to be channeled effectively to the bone marrow.

White blood cells, bone marrow, spleen, are examples of lymphoid tissue and cells which support the way the immune system responds to attack.

Corticosteroids don't increase the amount of lymphoid tissue and cells in the lymph nodes and spleen when immunosuppressive drugs like corticosteroids are used for individuals with lymphopenia.

           

                               

Give two reasons why studying DNA is important.

Answers

DNA is important because it encodes the genetic characteristics of a living organisms

Explain why both unisexual and bisexual flowers can self pollinate.​

Answers

Answer:

Bisexual flowers:

In order to make a new seed male gamete present in a pollen grain units with the female gamete present in the ovule.

Unisexual flowers:

Unisexual flower can self pollinate where both male and female flowers are present on the same plant. Stigma of the female flower can be pollinated by the pollen of the male flower present on the same plant.

Also because self pollination involves pollen to the same flower

if you are hiking and find fossils, can you dig them up

Answers

Answer:

thanks for the points May God bless you always

Which physical property of a medium is defined by how close the particles of the substance are to each other?

Answers

Answer:

The question is not complete as the options are not given, here are the options gotten from another website.

A) Crest.

B. trough.

C) density.

D) amplitude

The correct option is C.

Density.

Explanation:

This is because density of a particle is measured or define as the mass or weight of a particle divided by it's volume. This is a physical property which is determined through it's mass and volume, it illustrate how particles are closer or tend to move bearer to each other through it's mass and volume.

The vascular tissue of a plant transports various substances. Which substance would you expect to find in phloem, but not in xylem? a. Glucose b. Iron c. Potassium d. Water

Answers

I think the ans is d.water

While xylem transports water and mineral salts up from the roots to various parts of the plant, phloem transports sucrose and amino acids between the leaves and different parts of the plant. Thus, option D is correct.

What is the function of xylem and phloem?

Water and dissolved minerals are distributed upward through the plant by the xylem, from the roots to the leaves. The phloem carries nutrients from the leaves to the roots.

The vascular cambium gives rise to xylem, vascular tissue that moves nutrients and water throughout the plant.

The vascular tissue known as phloem, which carries big molecules like sugar, develops outward from the vascular cambium. Increased xylem and phloem cells are produced when the vascular cambium cells divide.

Therefore, water is the substance that you expect to find in phloem.

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Which Hawaiian island is the youngest (newest )?

Answers

Answer:im pretty sure its kauai actually

Explanation:yea i think soo!

Answer:

its hawaii

Explanation:

i hope its correct

plz can i get brainliest:)

an adaption that helps an organism blend in with the environment is called

Answers

I believe the correct answer is camouflage. The ability to blend into an animal’s environment.

Hope this helps!

How many stages of development take place in incomple metamorphosis? A.two B.three C.four D.five​

Answers

Answer: isnt it C. four

Explanation:

the earth requires 24 hours for one rotation. so in 24 hours how many longtitudes will face the sun?​

Answers

Answer:

The sun would observe 15 degrees of earth's longitude.

how does cancer effect the skin?

Answers

cancer can cause skin problems to the skin as it can cause a malignant wound when the cancer breaks the skin. this can lead to itchiness, dryness, and rashes to you skin as a malignant wound can easily be infected, which can leak large amounts of blood and have a strong odor

A food web shows how energy moves from one organism to another in an ecosystem. Students in a life science class created a diagram demonstrating a food web.
Based on the food web, which of these organisms receives its energy directly from a primary consumer?

Caterpillar
Dandelion
Frog
Grasshopper

Answers

Answer:

If you don't have a picture of the food web, I'm not sure but it's A or D

How can scientific conclusions be reliable, but also able to be changed with the introduction of new evidence

Answers

Answer:

scientific conclusions are reliable as they are helpful for many things however it is true that after the evolution of new ideas the old theory have some changes or may change fully or may be proved wrong but yeah the old theories are still helpful for many reasons and things.

so I think scientific conclusions are reliable

Do you think we should use technology to alter/manipulate our genetic code? Explain.

Answers

Answer: Yes and No

Explanation: I think that we should use technology to alter our genetic code if someone is ill/sick because it is actually beneficial, but I think we shouldn't dive too deep or get lost in altering genes because it can cause unintended consequences.

Explanation:

When we can govern the very biology that makes us who we are, what will it ... Technology Will Soon Give Us Precise Control Over Our Brains and Genes ... to manipulate these elements for medical purposes, do we not risk altering who we are? ... I feel a responsibility to at least explore what it would it take for the science .

What effect did an increasing human population have on the sustainability of a managed ebony forest?

A)The ebony forest population increased when managed, even as the human population grew. As the human population grew, forest management caused more trees to be produced.
B) The ebony forest population remained stable when managed, even as the human population grew. Forest management allowed more trees to be grown.
C) The ebony forest went extinct. As the human population grew, it was not possible to maintain the forest, even when it was managed.

Answers

The ebony forest went extinct. As the human population grew, it was not possible to maintain the forest, even when it was managed. That is option C

Forest is one of the renewable resources that needs to be conserved.

This is because the importance of forest to humans, wildlife and the soil can not be over emphasized.

Their benefits include:

They provide a protective cover for the soil against the action of wind and rain.They act as wind-breaks, reducing wind speeds and checking the erosion of the surrounding land.They provide homes for wildlife.

When there is increase in human population, the chances of a conserved forest like ebonyi forest to survive is diminished.

This is so because, with the increased population there will be:

Increased demand for timber,Clearing of forest for growing crops, Setting up industries, building roads and houses.

Therefore, the government may be forced to clear the forest to attend to the needs of the growing population. This can cause the ebonyi forest to go extinct.

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Which statement is an example of variation within a species? picture attatched.
A. Birds have wings, and so do butterflies.
B.Some squirrels are gray, and others are brown,
C.A lion roars and so does a tiger.
D.Dinosaurs are extinct but we know that they existed because of fossils.

Answers

Answer: B

Explanation: The other answers are talking about similarities among different species.

The nucleus contains genetic information which controls and gives the cell _________________ about what to do.

Answers

Answer:

please give me brain list and follow

Explanation:

The main function of the cell nucleus is to control gene expression and mediate the replication of DNA during the cell cycle. The nucleus is an organelle found in eukaryotic cells. Inside its fully enclosed nuclear membrane, it contains the majority of the cell's genetic material.

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The following transactions occur from July 1 through December 31.Jul.1Sell $19,500 of common stock to Suzie.Jul.1Sell $19,500 of common stock to Tony.Jul.1Purchase a one-year insurance policy for $4,320 ($360 per month) to cover injuries to participants during outdoor clinics.Jul.2Pay legal fees of $1,300 associated with incorporation.Jul.4Purchase office supplies of $1,400 on account.Jul.7Pay for advertising of $280 to a local newspaper for an upcoming mountain biking clinic to be held on July 15. Attendees will be charged $50 on the day of the clinic.Jul.8Purchase 10 mountain bikes, paying $17,200 cash.Jul.15On the day of the clinic, Great Adventures receives cash of $2,500 from 50 bikers. Tony conducts the mountain biking clinic.Jul.22Because of the success of the first mountain biking clinic, Tony holds another mountain biking clinic and the company receives $2,950.Jul.24Pay $720 to a local radio station for advertising to appear immediately. A kayaking clinic will be held on August 10, and attendees can pay $130 in advance or $180 on the day of the clinic.Jul.30Great Adventures receives cash of $7,800 in advance from 60 kayakers for the upcoming kayak clinic.Aug.1Great Adventures obtains a $46,000 low-interest loan for the company from the city council, which has recently passed an initiative encouraging business development related to outdoor activities. The loan is due in three years, and 6% annual interest is due each year on July 31.Aug.4The company purchases 14 kayaks, paying $13,200 cash.Aug.10Twenty additional kayakers pay $3,600 ($180 each), in addition to the $7,800 that was paid in advance on July 30, on the day of the clinic. Tony conducts the first kayak clinic.Aug.17Tony conducts a second kayak clinic, and the company receives $129,600 cash.Aug.24Office supplies of $1,400 purchased on July 4 are paid in full.Sep.1To provide better storage of mountain bikes and kayaks when not in use, the company rents a storage shed for one year, paying $4,680 ($390 per month) in advance.Sep.21Tony conducts a rock-climbing clinic. The company receives $14,400 cash.Oct.17Tony conducts an orienteering clinic. Participants practice how to understand a topographical map, read an altimeter, use a compass, and orient through heavily wooded areas. The company receives $18,200 cash.Dec.1Tony decides to hold the companys first adventure race on December 15. Four-person teams will race from checkpoint to checkpoint using a combination of mountain biking, kayaking, orienteering, trail running, and rock-climbing skills. The first team in each category to complete all checkpoints in order wins. The entry fee for each team is $520.Dec.5To help organize and promote the race, Tony hires his college roommate, Victor. Victor will be paid $60 in salary for each team that competes in the race. His salary will be paid after the race.Dec.8The company pays $1,000 to purchase a permit from a state park where the race will be held. The amount is recorded as a miscellaneous expense.Dec.12The company purchases racing supplies for $2,100 on account due in 30 days. Supplies include trophies for the top-finishing teams in each category, promotional shirts, snack foods and drinks for participants, and field markers to prepare the racecourse.Dec.15The company receives $20,800 cash from a total of forty teams, and the race is held.Dec.16The company pays Victors salary of $2,400.Dec.31The company pays a dividend of $4,600 ($2,300 to Tony and $2,300 to Suzie).Dec.31Using his personal money, Tony purchases a diamond ring for $3,600. Tony surprises Suzie by proposing that they get married. Suzie accepts and they get married!The following information relates to year-end adjusting entries as of December 31, 2021.Depreciation of the mountain bikes purchased on July 8 and kayaks purchased on August 4 totals $6,080.Six months of the one-year insurance policy purchased on July 1 has expired.Four months of the one-year rental agreement purchased on September 1 has expired.Of the $1,400 of office supplies purchased on July 4, $220 remains.Interest expense on the $46,000 loan obtained from the city council on August 1 should be recorded.Of the $2,100 of racing supplies purchased on December 12, $290 remains.Suzie calculates that the company owes $13,800 in income taxes.I have to make a general journal, Income statement, statement of SE, and balance sheet with this info. Any help? In a regression and correlation analysis if r^2 = 1, then a. SSE must also be equal to one b. SSE must be negative C.SSE can be any positive value d. SSE must be equal to zero TRUE/FALSE. while the principal parties to a transaction must be legally competent for a contract to be valid, it is possible for a party acting on behalf of a principal to obtain this legal right. in order for personal representatives and trustees to be authorized to act on behalf of a principal, a legal instrument commonly referred to as must be in place.