Answer:
10,000
Explanation:
because:
1 marsh plant= 1 DDT
a minnow = 100 DDT
if 1 minnow = 100 DDT
100 marsh plants = 100 DDT
you multiply 100 by 100
You get 10,000 as the answer.
Bioaccumulation is the accumulation of persistent substances, many times toxic substances, in the organisms' tissues. In the exposed example, if the minnow eats 100 plants, it will get 100 units of DDT.
----------------------
This problem states that
a farmer sprays DDT in a field.DDT reaches the marsh plants by the wind actionEach plant receives 1 unit of DDT, which remains in the plant by bioacumulation.When talking about bioaccumulation we refer to a net accumulation of metals and other persistent substances in the tissues of an organism.
Accumulation occurs during the individual's life and can be transmitted to other organisms in the trophic chain.
There are two ways in which an organism can get these substances,
from other living beings (trophic chain) by direct consumption from the soil, air, and water.
So, according to the introduction, each plant has one unit of DDT.
1 marsh plant -------------- 1 unit of DDT
We need to find out how much DDT gets one single minnow that eats 100 marsh plants in one year.
So here, we can just perform a three simple rule.
If one plant has 1 DDT units, how many units DDT are in 100 plants??If one minnow eats 100 plants in a year, how many DDT units does it get?1 marsh plant -------------- 1 unit of DDT
100 marsh plants ---------X = 100 units of DDT
If the minnow eats one plant, it will get one unit. But if the minnow eats 100 plants, it will get 100 units of DDT.
-----------------------------
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Could someone please help me with this? Sophia was fascinated while studying the role of oceans in the hydrosphere. She decided to illustrate the features of the ocean floor on a poster for her part in a group project. Identify and describe the kinds of features found on the ocean floor.
The continental shelf, slope, and rise are ocean features. The abyssal plain is the ocean floor. There are a few small deeper areas called ocean trenches beneath the ocean floor.
What is hydrosphere?A hydrosphere is a planet's total amount of water. The hydrosphere includes water on the planet's surface, underground, and in the atmosphere.
The ocean floor has a variety of features, including:
Abyssal plains are broad, flat areas of the ocean floor found at depths ranging from 4,000 to 6,000 metres.Mid-ocean ridges are long, mountainous chains that run through the ocean basins' centres.Oceanic trenches are long, narrow depressions in the ocean floor that can reach depths of 10,000 metres or more.Underwater mountains that rise steeply from the ocean floor but do not reach the surface are known as seamounts.Guyots are flat-topped seamounts that have been eroded over time by wave action.Thus, these are just a few examples of the many features found on the ocean floor.
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the rungs of dna are made up of
Answer: The rungs of the ladder are formed by complementary pairs of nitrogen bases — A always paired with T and G always paired with C.
Explanation:
Answer:
They are made up of nucleic acids. Specifically, the nucleic acids adenine, cytosine, guanine, and thymine.
Explanation:
Hope this helps!
2. In the near future, do you think deserts are likely to con-nue expanding or will deser-fica-on
be contained or even reversed? Why?
Answer:
reversed
Explanation:
Its structure is considered to be like a large dirty snowball
a) Comet
b) Meteor
c) Asteroid
pls i rly dont know
it's a comet i hope it helps
Its structure is considered to be like a large dirty snowball is Comet. Thus, option A is correct.
What is commet?Objects that are generally smaller than planet as the Asteroids, meteors, and stars have one thing in common which is they all smaller object that a planet which in turn means that the planet is bigger that them.
Asteroids are smaller in nature than planet and meteors are smaller in nature than planet and the Stars are smaller in nature than planet. Asteroids- are made from minerals and rock. Meteors- is made from space debris and rocks Comets- are made from Frozen gasses,ice, and rocks.
Asteroids, comets and meteors are small objects present in the galaxy which orbits the planets such as earth. They are very small when compared to the planets.
Some stars are bigger than certain planets therefore the group of objects comprising of stars do not explicitly represent the group of objects smaller than planets.
Therefore, Its structure is considered to be like a large dirty snowball is Comet. Thus, option A is correct.
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please answer quick!!!!
What type of food does a bird with a raptorial beak eat?
A) insects
B) seeds
C) dead animals
D) live animals
Answer: D- live animals
Explanation:
How many yeast cells would you expect to find after 15 days?
(Will mark as brainliest)
Answer:
4.5 thousands is the correct answer
which of the following biomolecule typically contains both nitrogen and phosphate
Answer:
Nucleus acid
Explanation:
I got it correct
The Moon is much smaller than the Sun, but the moon has greater effect on the tides.
A. Because the Moon is brighter at night.
C. Because the Moon is made out of rocks.
B. Because the Moon is much closer to Earth.
D. Because the Sun’s gravity is weaker.
Answer:
B
Explanation:
the tides are controlled by the moons gravitational pull because it is closer though the sun is bigger it is also the middle of our system and farther away from our planet
PLEASE HELP!!! (50 POINTS) Fill in the table with the name of each phase of meiosis as shown in the diagram.
Diagram # Phase of Meiosis
1.
2.
3.
4.
5.
6.
7.
8.
Which answer choice correctly identifies structures A, B, C, and D?A.Chromosome; centromere; homologues; sister chromatidsB.Sister chromatids; centromere; homologues; chromosomeC.Homologues; centromere; homologous chromosomes; spindle fibersD.Chromosome; centromere; sister chromatids; homologous chromosomes
Answer:
The structure of the materials are given below.
Explanation:
If the structure of the picture is thread-like we called it chromosomes. If the structure in a chromosome that holds together the two chromatids is known as centromere. Half part of the duplicated chromosome is known as Sister chromatid. If two material has same size and shape we called it homologous structure such as sister chromatids.
Justify your choice by writing a hypothesis to explain how it has stopped the algae from making ATP, NADPH and sugars. You will be able to revise your hypothesis as you do more experiments
Answer:
Light energy.
Explanation:
Light energy cannot reach the chloroplasts, preventing ATP, NADPH and sugars because light energy is responsible for photosynthesis in algae. if light energy is not available to algae, then no photosynthesis happens and as a result no energy produced in the form of ATP, NADPH and sugars in the body of algae. so we can conclude that light energy is responsible for the preventing of production of ATP, NADPH and sugars.
GBR or Great Barrier Reef is the largest coral reef, which includes many marine organisms and corals. The GBR water is inhibiting the growth of algae mostly due to Diuron.
Diuron is an unmanageable pesticide found in the GBR. Diuron is highly toxic, persistent, and can travel long paths. Diuron interferes with photosystem II by blocking the electron transfer. PSII is an important membrane protein complex, which plays a crucial role in oxygenic photosynthesis. Thus, any interference in PSII will interfere with the production of NADPH and ATP.
However, the high temperature and paraquat can affect algae in the following ways:
Paraquat is also a herbicide, which has toxic effects on the organisms. Exposure to Paraquat has shown significant damage to the cell and inhibited cell growth. High Temperature is one of the major concerns worldwide. Due to global warming, all the organisms, terrestrial or marine are in danger.To know more about GBR, refer to the following link:
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HELP i’m suck:
Select all the correct answers.
Based on the factors that drive ocean currents, which of the following events could permanently alter an ocean current
pattern?
A:an increase in tides near the seashore
B:a large-scale melt of ice sheets and icebergs in Earth's polar regions
C:a change in the direction of the prevailing winds in the far North
D:a rainstorm that brings strong winds
E:an increase in the amount of water vapor in the atmosphere
Answer:
B&C
Explanation:
That's the answer that is right
Which rainforest layer recelves the most sunlight? !
Answer:
The answer is the Emergent Layer
hope that helps
How does apoptosis relate to cancer cells?
A. In cancer cells, too much apoptosis occurs, resulting in malignant cells that will not undergo programmed cell death
B. In cancer cells, too little apoptosis occurs, resulting in malignant cells that will not undergo programmed cell death.
C. In cancer cells, apoptosis occurs only when cells grows without proper regulation.
D. In cancer cells, apoptosis occurs only when the cells receive the proper hormones.
Answer:
B. In cancer cells, too little apoptosis occurs, resulting in malignant cells that will not undergo programmed cell death.
Explanation:
Answer:
B. In cancer cells, too little apoptosis occurs, resulting in malignant cells that will not undergo programmed cell death.
Explanation:
Select from the drop-down to correctly complete the statement.
All atoms of an element are
A. alike
B. different
C. flammable
D. visible under a microscope
Answer:
If we're talking about one specific element, then your answer is A) alike.
Answer:
C flammable
Explanation:
what type of bond is formed by the union of nonmetals with metals
Answer:
ionic bondExplanation:
Answer:
ionic bond
Explanation:
A student wants to determine the effect of soil type on plant growth. He sets up three pots as shown below. How could this experiment be improved?
Answer:
Each pot should have a different soil in it and someone should take data of how the plants grow with each of all the different soil type.
Explanation:
What Is a non example of a smooth muscle
Answer:
stomach, uterus, and urinary bladder
Explanation:
this is present in the walls of these hallow organs and in the walls of passageways like arteries and vains
What would be the blood type of a person who inherited an allele from one parent and an allele from the other?
Does photosynthesis produce or use up energy?
Answer:
i believe it uses up the energy to produce their own food
Answer:
Photosynthesis produces energy.
Explanation:
Photosynthesis produces energy from carbon dioxide, water and sunlight to make food (starch) that is in turn energy for the plant.
Which of the following would provide the most energy in an ecosystem?
A. Omnivore
B. Carnivore
C. Producers
D. Herbivores
Answer:
The one that would provide the most energy in an ecosystem are producers!
Explanation: On the food chain and in the ecosystem they contain the most energy. About 90% is lost through heat and and movement of the animals. Lets say you have 10,000 kelo calories, then you have the producer and then your 3 animals, this means the last one only gets 10 kelo calories!
The following would provide the most energy in an ecosystem: producers, which are in Option c, as the producers are organisms such as algae and green plants that can synthesize their own food using the energy of the sun.
What is the significance of the producers in energy production?Producers include plants, algae, and some bacteria that serve as the primary source of energy, converting light or chemical energy into a form of food such as glucose, and in every ecosystem, the producers have many important roles. Herbivores and carnivores all depend on them, both directly and indirectly.
Hence, the following would provide the most energy in an ecosystem: producers, which are in Option c, as the producers are organisms such as algae and green plants that can synthesize their own food using the energy of the sun.
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A strata of coal is also referred to as a ____________ of coal.
Answer:
Coal bed would be your answer
hope it helps!
Answer:
The answer is...
A strata of coal is also referred to as a bed of coal.
Explanation:
Coal bed: A bed or stratum of coal. Also called a coal seam. Coal bed degasification: This refers to the removal of methane or coal bed gas from a coal mine before or during mining.
Hope this helps!!
Brainliest!!!
Which statements are true? Check all that apply.
A.) In eukaryotes, DNA is found in the cytoplasm of the cell.
B.) RNA is the nucleic acid that helps build proteins.
C.) DNA is the nucleic acid that carries genetic information.
D.) The structure of proteins is determined by DNA.
E.) A chromosome is made of RNA.
Answer:
A, B, C, D
Explanation:
A is true. DNA is found in the cytoplasm of the cell in eukaryotes. (I'm 95% sure.)
B is true. RNA is a nucleic acid, and it helps build proteins.
C is true. DNA is a nucleic acid that builds the genetic code/information.
D is true. The structure of many things, including proteins, is determined by DNA. (Don't get this confused with RNA. RNA helps build proteins, but DNA determines the structure.)
E is false. A chromosome is made up of DNA, not RNA.
(I'm about 95% sure my answers are correct, but please don't be dependent on these answers.)
Answer:
2,3,4
Explanation:
Edge 2020, plz mark as brainliest
During mitosis, a double-stranded chromosome is attached to a spindle fibre at the:
A centriole. B centrosome. C centromere. D chromatid.
What are the sources of hydrogen in the
thylakoid? choose all that apply
1.breakdown of glucose
2.pumping of hydrogen across that thylakoid
membrane
3.splitting of water
4.splitting of CO2
Answer: splitting of water + pumping of hydrogen across that thylakoid membrane.
Explanation:
The sources of Hydrogen in the thylakoid are- Pumping of hydrogen across the thylakoid membrane; Splitting of water molecule. Thus, the correct options are 2 and 3.
What is Photosynthesis?Photosynthesis is the process through which plants make their food. This process takes place in the chloroplast of plant cell. The chloroplast contains Photosystems- PSI and PSII which are responsible for photosynthesis. The hydrogen ions required by the plants are obtained by the Photolysis (splitting of water molecules) to release oxygen and hydrogen. This occurs in photosynthesis. i.e., photosystem-II.
To replace an electron in the reaction center in PSII, a molecule of water is split. This releases an electron and results in the formation of oxygen (O2) and hydrogen ions (H+) in the thylakoid space.
The hydrogen ions are pumped actively through ATP synthase. This uses up ATP energy and causes the production of ADP and phosphate. The Ubiquitin protein present in the membrane is the carrier for hydrogen ions.
Therefore, the correct options are 2 and 3.
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Which of the following is a trace gas?
O nitrogen
O ozone
O oxygen
O hydrogen
Help please ASAP
Answer:
O hydrogen
Explanation:
hope it helps, please mark as brainliest please
Answer:
ozone
Explanation:
Out of the 1% of trace gases it makes up .01% of them.
Explain how my model can be used to describe what causes changes in Earth’s seasons?
Put the various atmospheres into the order they occurred from earliest (TOP) to latest (BOTTOM)
Answer:
1. A thin layer of hydrogen and helium that was blown off by solar wind.
2. heavily water vapor.
3. mostly carbon dioxide and methane.
4. mostly nitrogen and oxygen.
Hi if the answer is wrong am sorry I tried but if it is correct then I'm happy I helped
ill give a Brainliest if it is right
The pictures below show a bottle made of plastic and a block made of concrete.
Which of these statements is correct about plastic and concrete?
A)Both plastic and concrete are minerals because they are natural, solid materials.
B)Both plastic and concrete are not minerals because they are made by humans.
C)Plastic is a mineral because it has a definite crystal structure but concrete is not a mineral because it is organic.
D)Plastic is not a mineral because it is not formed under the ground but concrete is a mineral because it has a definite composition.
Neither of these are minerals, B.
Its not A because, they are not natural materials but instead made up of natural materials, like a rubber tree.
Its not C because, like I said, plastic is made from rubber trees, this garentees it doesnt have a crystal structure.
Its not D because, concrete is not a mineral and has indefinite composition.
Answer:
b
Explanation:
took the test