Answer:B
Explanation:
Read the following passage from the Biology Department at University of California, Berkeley.
Northern elephant seals have reduced genetic variation because hunting by humans reduced their population size to as few as 20 individuals at the end of the 19th century. Their population has since rebounded to over 30,000, but their genes still carry the marks of this near extinction: they have much less genetic variation than a population of southern elephant seals that was not hunted as intensely.
Which of the following best describes how the population has evolved?
The population has not evolved because there was no change in allele frequencies.
The population has not evolved because it has grown.
The population has evolved because it has grown.
The population has evolved because there was a change in allele frequencies.
Answer:
the last one sorry if i'm wrong
Explanation:
According to the passage from the Biology Department at University of California, Berkeley.Northern elephant seals have reduced genetic variation because hunting by humans reduced their population size to as few as 20 individuals at the end of the 19th century. Their population has since rebounded to over 30,000, but their genes still carry the marks of this near extinction: they have much less genetic variation than a population of southern elephant seals that was not hunted as intensely.
The best option that describes is" the population has not evolved because there was no change in allele frequencies.Thus, option B is correct.
What is population?The term population reffered to the total number of people living in a particular given area.The population of an organism can't survive if it exceeds it's carrying capacity.
The causes that affect population growth animals that if there are more plants than usual in area, populations of animals that eat that plant may increase.
If animal population increases the population that eat that animal might also increase.
The effects of animals population can be dangerous and when population exceed the carrying capacity of their environment, animal suffer of malnutrition and disease.
When predictors became scarce due to over population, the weekar species of animal start or die in other ways .
The accurate description of the growth of a natural animal population is limited by environmental factors.
Therefore,The best option that describes is" the population has not evolved because there was no change in allele frequencies.Thus, option B is correct.
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7. Since the allele for color blindness is located on the X chromosome, color
blindness
1 cannot be inherited
2 occurs only in adults
3 is sex-linked
4 none of the above
(HELP ME PLEASEEE!)
Hemophilia A and red-green color blindness are examples of X-linked recessive diseases. Color blindness to red and green. Red-green color blindness prevents a person from recognizing red and green hues (usually blue-green). Otherwise, though, they can see normally. Thus, option C is correct.
What allele for color blindness located on X chromosome?Females have two X chromosomes, while males have one X and one Y chromosome. The X chromosome is where the genes that might cause red-green color blindness are handed down. Men are more likely than women to have red-green color blindness, since it is X-chromosom-inherited.
One of the most prevalent genetic (inherited) disorders in the world is color blindness, which means it is typically inherited from your parents.
Therefore, the allele for color blindness is located on the X chromosome, color blindness is sex-linked.
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which 5 kingdoms that do have cell walls?
Answer: There are six kingdoms: Archaebacteria, Eubacteria, Protista, Fungi, Plantae and Animalia. Organisms are placed in a specific kingdom based upon a variety of factors, including cell wall structure. As the outermost layer of some cells, the cell wall helps maintain cellular shape and chemical equilibrium.
Can someone PLEASE help I will mark brainlist!
Answer:
C. Mutations are all permanent. Mutations can occur in many types of cells, and contribute to genetic diversity. Not all mutations are caused by harmful chemicals, as there are many natural mutations in nature. However, mutations are not always passed on from parents to offspring.
Why do plants adapt to their environment? O in order to give the surrounding animals and people enough food to survive O in order to get the water and sunlight they need to survive in a harsh environment O in order to block sunlight from the floors of the ocean and the rainforest O in order to grow very tall and to become as bright and colorful as they can
Which statement describes the density of the inner planets?
All the inner planets are dense.
The inner planets are less dense than the outer planets.
Earth is dense, while the other inner planets are not.
Mercury and Venus are dense, while Earth and Mars are not.
Answer: All inner planets are dense
Explanation: Mercurius, Venus, Earth and are more dense than Jupiter
and Saturnus
Which remains the same during a chemical reaction?
Answer:
In a chemical reaction the total mass of all the substances taking part in the reaction remains the same. Also, the number of atoms in a reaction remains the same. Mass cannot be created or destroyed in a chemical reaction
Because matter is not created or destroyed in a chemical reaction, the total mass of reactants is the same as the total mass of products.
What part of the digestive system turns food from a solid into a liquid
All of the following affect the climate of an area except
A. Proximity to a large body of water
B. Altitude above sea level
C. An extremely hot day
D. Distance from the equator
Answer:
I think it is b
Explanation:
please tell me if this is wrong
Answer:
not 100 but I'd say D I think I'm like 70%
A group of marine scientists introduced a species of fish into an artificial habitat and wanted to determine if it will grow well in the new environment. They recorded the population over several years and their data is plotted below. Analyze the data and formulate a conclusion. Does this species of fish do well in this habitat? Predict what will happen to the population over the next five years.
Answer:
It will be increased by a lot over the nect five years
Explanation:
Answer:
This species of fish don't do well in this habitat, we can see this because in 9 years the number of individuals went from 100 to 63, which is 37 individuals less. Over the next five years, the population will continue to decrease.
Choose one example of U.S. consumer waste from the bulleted list. Research to learn more about the waste described and what is being done to reduce it. Summarize your findings in a paragraph.
Answer:
pharma disposal waste, Medical waste disposal
The one example of U.S. consumer waste from the bulleted list is the pharmaceutical wastes and medical wastes.
What is pharamaceutical wastes?
If translated to the pharmaceutical chain, prevention of waste withinside the prescribing and shelling out degree is the maximum preferable, observed through redispensing and recycling medicinal drug that stays unused at some stage in the deliver and use chain.
Two strategies of removing medical waste consist of incineration or autoclaving. Incineration is a system that burns clinical waste in a managed environment. Some hospitals have one incineration generation and system available.
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PLEASE HELPP (it's due at 11:59, i would like it done now)
here are the links to the articles if the ones on the pdf doesn't work
https://www.reuters.com/investigates/special-report/usa-lead-testing/ https://www.epa.gov/environmentaljustice
https://www.tedmed.com/talks/show?id=627338
Ive put this question here twice, i really need help, plz dont answer if youre not gonna help
What is a reason for peer reriew?
A: to maintain scientific standards
B:to allow anyone to submit research
C:to ensure that science remains elitist
PLEASE HELP WILL GIVE BRAINLIEST
Which statement describes characteristics of Islamic tughras?
OThey contain complex arabesques and interlaced
lines.
OThey depict the names of common citizens using
calligraphy.
OThey include text and images from epic stories
important to Muslims.
OThey contain images of plants, animals, and humans.
Answer:
i believe it is d.
Explanation:
This diagram illustrates a type of reproductive process in an organism.
Answer:
Where is the diagram? Take a phone of the diagram
Like in this picture, Does tropical zone have a high temperature?
hii! i’ll give brainliest pls help
Answer:
Option 2 earthquakes
Explanation:
Hope it helps ^^
Where are fossils mostly found
Answer: Usually underground or in a Sedimentary Rock.
Explanation:
Only about _____% of the water on Earth is potable (suitable for humans to drink).
Of this water that is potable, only about 30% is in the form of ground water.
On the surface of the planet only ______% of water is freshwater in the forms of lakes and streams.
Areas with low availability of drinking water are said to be water ______________.
Ideas to reduce water stress in preparation for the anticipated shortages include:
→ _____________ pollution in rivers and lakes
→ using water conserving technology
→ perfecting desalination plants to process undrinkable ________ water into drinkable fresh water
Answer:
only about 0.3%and the plant is 99.7 and the 3 one is 0.3 unattainable.
Explanation i hope the
Crossing-over
A. increases genetic diversity
B. ends meiosis
Answer:
A. increases genetic diversity
Explanation:
Gene duplication, mutation, or other processes can produce new genes and alleles and increase genetic variation.
Why are theories important to science, if they cant be proven? Can they be changed/ modified? ( Please answer simply)
Answer: A scientific theory cannot be proven correct because there is no way to look into the future and find out if the theory is ever revised. Theories tend to change greatly as new discoveries are made.
What happens when cells grow out of control?
What condition(s) make space a harsh environment for humans?
A. Lack of oxygen
B. All of these
C. Cosmic radiation
D. Lack of pressure
Which characteristic of water quality provides the most information regarding the health of a water system ?
Answer:
The Physical properties of water quality include temperature and turbidity.
Explanation:
Poll results show that 90% of scientists believe global warming is happening, so it is best to say that
A) a majority of scientists do not support the theory of global warming
B) global warming is alarmist propaganda
C) global warming is happening
D) a minority of scientists doubt global warming is occurring
E) global warming is a creation of scientists
Answer:
I think it's C
Explanation:
I hope this helps ^^
A mutation on the checkpoints of the cell cycle can cause....
A. Apoptosis
B. Uncontrolled division
C. S phase
D. deactivation
Answer:
I will GUESS B is your answer
Explanation:
Question: The functions of a particular cell structure are described below:
It allows waste to exit the cell.
It allows chemicals required for cellular respiration to enter the cell.
It regulates the movement of water into and out of the cell.
Which cell structure do these statements describe?
Answers:
A: endoplasmic reticulum
B: lysosome
C: mitochondria
D: plasma membrane
Answer:
b
Explanation:
The cell structure that allows waste to exit the cell is Lysosomes. It is the garbage disposal of a living cell. It eliminates all the waste materials through the process of degradation.
What do you mean by Cell structure?Cell structure may be defined as a structure that contains all those components with specific functions essential to carrying out life's processes.
The cell structure that allows chemicals required for cellular respiration to enter the cell is Mitochondria.
The cell structure that regulates the movement of water into and out of the cell is the Plasma membrane.
Therefore, each cell structure is defined above with respect to its functions.
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Before mitosis begins, which happens before the nucleus starts diving?
A. The cytoplasm separates.
B. The DNA replicates.
C. The sister chromatids separate.
D. The homologous chromosomes cross over.
Answer:
B. The DNA replicates.
Explanation:
Activity in the chromosomes must occur before the beginning of mitosis. The cells will enter the S1 phase in preparation to divide.
Answer:
B should be your answer
Explanation:
3) Earthquake S-waves do not travel through the Earth's
A) crust
B) moho
C) mantle
D) core
Answer:
Earthquake s waves do not travel through the Earth's core
Why human beings are complex organism ?
Answer:
Human is a complex organisms because humans are made up of trillion of cell and a lot of system and organ . Some of the major systems are blood circulatory systems, the skeletal system, the digestive system, the nervous system and the respiratory system.