Which best explains why all of the Earth’s freshwater is not available for human use?
Answer:
2.5% of the earth's fresh water is unavailable: locked up in glaciers, polar ice caps, atmosphere, and soil; highly polluted; or lies too far under the earth's surface to be extracted at an affordable cost.
Explanation:
99% of liquid freshwater on Earth is Stored as Ground water
Much of it probably isn't accessible to us Human.
About 71 % of Earth is covered in water, and the Ocean holds most of it but this is salt water, almost all fresh water is stored underground
Define the following and give an example of each.
Answer:
Omnivore - An animal that eats both plants and animals.
Scavenger - An animal that feeds on dead animals/plants.
Herbivore - An animal that only feeds off of plants.
Answer:
Explanation:
An omnivore is an animal and or person that eats meat and plants.
A scavenger is an animal the feeds on dead organisms.
A herbivore is an animal that only eats plants.
what cause's cell division
Cells divide for many reasons. For example, when you skin your knee, cells divide to replace old, dead, or damaged cells. ... When organisms grow, it isn't because cells are getting larger. Organisms grow because cells are dividing to produce more and more cells.
Answer:
Explanation:
Cells in an organism go through division all the time. One reason is for growth. As an organism grows, more cells are created. Cells divide instead of grow because there is an optimal size for cell. So it is more efficient to create new cells.
Second reason for cell division is to repair damaged cells. Some cells like skin cells are damaged routinely and cell division is the way to repair and replace damaged cells.
Last reason is for reproduction. All organisms use cell division to reproduce.
Briefly describe ANY environmental condition that affects photosynthesis.
Answer:
Light intensity
Explanation:
without enough light a plant cannot photosynthesise very quickly even if there is plenty of water and carbon dioxide
okok, eren or levi.
now choose.
Answer: levi
Explanation: because he’s much hotter
How would you expect the number of births to compare to the number of deaths in a population that was changing?
PLEASE HELP
A student i studying several species that belong to the plant kingdom. Which two are most closely related
A Fermaldia pandurata and Ficus pandurata
B Castilla elastica and Ficus elastica
Ficus benjamina and Ficus lyrata
Bromus japonicus and Ipomoea violacea
Answer: the answer is A
Explanation: i just did it
What is the purpose of mitosis?
a. Growth and repair of body cells
b. Makes new gametes
c. Random generation of new cells in bacteria
d. Only happens during early development
7. An extremely rare X-linked recessive genetic disorder known as Norrie disease affects the eyes
and can lead to blindness and in some cases hearing loss. There are only 400 known cases of
Norrie disease worldwide. Explain why it is virtually impossible for a baby girl to be born with
Norrie disease.
Answer: Girls need to inherit two affected chromosomes to develop the disease, and it may also happen that the affected chromosome is inactivated in the eye (if it has only one)
Explanation:
Norrie's disease is an inherited eye disorder affecting males, which is characterized by abnormal or immature development of the retina (light-sensitive nerve tissue lining the back of the eye) and possible deterioration of the iris (colored part of the eye) and eyeballs. X-linked recessive inheritance is one of the ways in which a genetic trait or condition is passed from parent to child when there are mutations in a gene on the X chromosome from either the father or the mother. Females possess two X chromosomes, while males possess one X and one Y chromosome. In males, the presence of a mutation on the X chromosome causes the disease, since it is the only X they possess. In females, both X chromosomes need to be affected if it is a recessive condition.
So, the disease is inherited in an X-linked recessive manner, which means that almost all affected individuals are male. However, the sons of affected males will not have the mutation since they only inherit the Y chromosome, while all their daughters will be genetic carriers of the mutation because they inherit the affected X chromosome, although without clinical symptoms but being carriers. On the other hand, the mother will pass one of her two X chromosomes (which may or may not be affected) randomly to both her male and female offspring (if they are male, they will be affected and if they are female they will be carriers unless they also inherit an X chromosome from their father). So the only way for females to develop the disease is for their two copies of the gene to be mutated if both parents have the mutation.
But female carriers could be affected by inactivation of their X chromosome with the correct sequence. X chromosome inactivation is a random process that happens separately in individual cells during embryonic development. That is, one cell may inactivate the paternal X chromosome, while others may inactivate the maternal X chromosome. This is because a dosage compensation is necessary, since the Y chromosome in males is not homologous to the X, it does not have the same genes, so if females would express both X chromosomes, they would have twice as many genes as a male. All the descendant cells of each of these original cells will maintain the same pattern of X chromosome inactivation.
In females, one X chromosome is inactivated in each tissue in an arbitrary manner. Then, in addition to having to inherit two affected chromosomes, it may also happen that the affected chromosome is inactivated in the eye (if it has only one).
Help me with this question please !!!
Answer:
C
Explanation:
giving brainliest
Which part of the body connects the bones together and prevents them from rubbing against each other?
Blood
Cartilage
Muscle
Spinal cord
Answer:
b! (cartaladge)
Explanation:
Answer: Cartilage
Explanation: It’s a soft pad in between your joints that prevents them from rubbing together. Usually it is warn out in your years of life.
2. Why is it important to have diversity within a population?
a. Better chances of survival in a changing environment
b. Mutations
c. To reach carrying capacity
d. To encourage evolution
Answer: I believe the correct answer is A
Explanation:
Please answer correctly and quickly
Answer:
C.
Explanation:
Which is the best definition of a phylogenetic tree?
Answer: A phylogenetic tree is a branching diagram or a tree showing the evolutionary relationships among various biological species or other entities based upon similarities and differences in their physical or genetic characteristics.
Explanation:hope I helped (can I get braincrown)
Definition: A phylogenetic tree is a diagram that depicts the lines of evolutionary descent of different species, organisms, or genes from a common ancestor
Hope this helps!
Which of the following describes an impact of floods on ecosystems?
Answer:
Soil erosion.
Explanation:
Soil erosion is the impact of floods on ecosystems because the floods moves very fast which takes soil with itself. Due to soil erosion, the productive layer of the soil or the layer in which nutrients are present are eroded which has a negative impact on the plants due to unavailability of nutrients. The floods moves very fast and the soil has no the ability to hold its particle tightly which leads to erosion of the soil that negatively affected the ecosystem.
Who is known as the father of Natural selection?
Answer:
Darwin's theory.
Explanation:
What would the interaction between the cattle and the vampire bats be called if the bats drank blood but somehow caused no harm at all to the cattle? Explain your answer.
** No links or files, I will report you answer so it gets taken down
The complementary base strand to the DNA sequence ATGGCTA is TACCGAT.
O True
O False
True, the complementary base strand to the DNA sequence ATGGCTA is TACCGAT, hence option A is correct.
What is the complementary base in DNA?Deoxyribonucleic acid, or DNA, is a kind of genetic material. The polynucleotide chain is very lengthy.
Deoxyribose sugar (a molecule containing carbon), phosphate group, and nitrogenous bases make up each nucleotide (nitrogen-containing compound).
There are two types of nitrogenous bases: pyrimidine and purines, which include adenine and guanine (consisting of Cytosine and Thymine). Guanine forms three hydrogen bonds with cytosine whereas Adenine couples with thymine through the formation of two hydrogen bonds.
Therefore, the complementary base strand to the DNA sequence ATGGCTA is TACCGAT, hence option A is correct.
Learn more about the DNA, here:
https://brainly.com/question/10964050
#SPJ2
Oils are ___, or "water hating."
A. hydrophobic
B. hydrophilic
C. polar
Answer:
A
Explanation:It iz wat it iz
plz help
Lichens, a type of fungus, maintain a symbiotic relationships with algae. How does this fungus affect the algae if it has a symbiotic relationship?
Question 6 options:
It gets its energy by harming the the organism.
It get its energy from an organism that is decaying or decomposing.
It gets its energy from another living organism, but does not harm it.
Answer:
It get its energy from an organism that is decaying or decomposing
Explanation:
Fungi get energy from an organism that is decaying or decomposing
Answer:It gets its energy from another living organism, but does not harm it.
Explanation:
Sorry I'm late but i just took the test :)
A population of rabbits has both brown and white phenotypes controlled
by complete dominance. The gene pool contains 100 B alleles and 125 b
alleles. What is the allele frequency of the dominant trait? *
1. 1.25 b
2. .8 B
3. 155 b
4. 44 B
Answer:
.8 B
Explanation:
Divide the number of dominant alleles with the number of the other alleles
100 ÷ 125 = 0.8
Kaden is making waves using a string tied to a doorknob. He moves the string up and down and creates four waves, as shown in the picture below.
Kaden wants to create more than four waves using the same piece of string. What could he do to create more waves in the same amount of time?
A.
hold the string tighter as he moves it up and down
B.
pull the string away from the wall before moving it up and down
C.
move the end of the string up and down more quickly
D.
move the end of the string up and down more slowly
Answer:
C
Explanation:
For standing waves, the areas where the amplitude is zero are referred to as nodes while the areas where the amplitude is at the maximum are known as antinodes.
A standing wave derives its feature primarily from the fact that there are certain points along the medium of transmission that are apparently seeing to be standing still with no displacement whatsoever. At the same time, there exist opposing points to the points of zero displacements. These points have a maximum displacement in both the positive and negative directions. While the former is referred to as nodal points, the latter is known as the antinodal points.
(b)
The allele for blue eyes is recessive (b).
The allele for brown eyes is dominant (B).
A woman has blue eyes.
What are the woman's alleles?
Tick one box.
BB
Bb
bb
what 2 parts of your body make up the central nervous system?
The answer is brain and spinal cord
____________________ is a series of chemical reactions that convert light energy, water, and carbon dioxide into glucose and oxygen. Photoperiodism Cellular respiration Photosynthesis Pollination
Answer:
Photosynthesis
Explanation:
19. What is Chemical weathering?
Answer:
Explanation: Chemical weathering is caused by rain water reacting with the mineral grains in rocks to form new minerals (clays) and soluble salts. These reactions occur particularly when the water is slightly acidic.
Which of the following mixtures forms a solution?
A. melting ice
B.
sand and water
C. boiling water
D. alcohol in water
Answer:
D. alcohol in water
Explanation:
All the other answers do not form a solution. Melting ice, as well as boiling water, is still pure water. Sand and water are two different substances, however, sand does not dissolve in water to create a homogeonous solution, leaving alcohol and water, which DO combine into a homogeonous solution.
What are some short and long term positive benefits of the printing press
short-term and long-term positive contribution of the printing press was and is the ability to disseminate knowledge quickly. Through the printing press, more people could have access to new ideas, and those ideas radically changed the landscape of the Holy Roman Empire.
HELP I WILL GIVE THE CROWN
Answer: chicken and turkey mark me brainliest
Explanation:
what is the answer to this
Answer:
to allow implantation of the embryo
the first box is correct