CFCs and other halogen-source chemicals in the stratosphere were discovered to deplete the ozone layer.
What is ozone layer depletion?
Ozone depletion is the steady lowering of the Earth's ozone layer in the high atmosphere, which is produced by the discharge of chemical compounds from industry and other human activities that contain gaseous chlorine or bromine.
The ozone layer acts as a buffer against the sun's potentially dangerous ultraviolet rays. The destruction of the ozone layer puts humans in direct contact with dangerous ultraviolet rays, which can lead to a variety of health problems including cancer, cataracts, skin illnesses, and a weakened immune system.
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What do we call the freeze dried state that Monerans enter to survive harsh conditions ?
HELPPPPPPP
Answer:
dddďdddddddddddddddddddddd
Answeer: cell state
Explanation:
Plasma membranes allow certain materials to pass through them. Investigate how this property contributes to homeostasis.
Answer:
this
The Plasma membrane maintains the homeostasis throughout a cell because it filters what substances go in and out of the cell. If there is too much of a substance in a cell the plasma membrane quickly disposes it and when there is not enough of a substance in a cell the plasma membrane lets the substance in.
or this
A major role of the plasma membrane is transporting substances into and out of the cell. The plasma membrane is selectively permeable, allowing only certain substances to pass through. ... Cell transport helps cells maintain homeostasis by keeping conditions within normal ranges inside all of an organism's cells.
one of them should have been the answer ;)
What are two examples of how the urinary system maintains homeostasis in the human body?
Answer:
In addition to maintaining fluid homeostasis in the body, the urinary system controls red blood cell production by secreting the hormone erythropoietin. The urinary system also plays a role in maintaining normal blood pressure by secreting the enzyme renin.
Explanation:
Imagine you could shrink to the scale of the tiny particles that make up matter and move around in a cup of hot chocolate. Write about or draw (and then upload) what you would experience.
Answer:
can you make my friend............
Identify the independent, dependent, and constant variables for different experiments. A biologist tests different lighting conditions for bacteria. She uses the same number of the same strain of bacteria on each petri dish, with the same type and amount of growing medium on each. Each petri dish is subjected to a different amount of light for a 24-hour period. After this time, the biologist counts the number of bacteria on each petri dish.
Answer:
points
Explanation:
Darwin’s explanation for evolution was dependent on which scientific concept?
Answer:
The existence of variations in population.
What is the difference between the cell membrane and the cell wall?
Answer:
Cell membrane helps to enclose the cell organelles and cytosol inside a cell. ... A cell wall is a ridgid, protective layer and it covers the cell membrane. For plants, cell walls are mainly made up of cellulose, while a cell wall in bacteria is made up of peptidoglycan,and for fungi it is made up of chitin.
Explanation:
What happens when cerebrum of brain get injured?
Which ends up with half the number of chromosomes?
Answer:
Meiosis end ups with half the no. of chromosomes..
Answer:
Meosis
Explanation:
Meosis 1 ends with 2 diploid cells that end up dividing again into 4 haploid cells. Thus, the end result of meosis is 4 haploid cells with 23 chromosomes each.
An amoeba ingests large food particles by
Why is it important for DNA to remain in the nucleus?
What makes the climate different in the different biomes earth?
Answer:
The animals the different kinds of weather in that biome. Where it is located.
Explanation:
Which of the following statements is true?
a) only males can get an X-linked. disorder.
b) only females can get an X-linked disorder.
c) only males can get a Y-linked disorder.
Answer:
The answer is a
Explanation:
X-linked disorders result from mutated genes on the X chromosome. Males, who have only one X chromosome (i.e., they are hemizygous), will fully express an X-linked disorder. On the other hand, females, who have two X chromosomes, will be carriers of the defect in the majority of cases, and so they are usually asymptomatic.
Air pollution is a major health problem caused by the burning of fuels in
a.vehicles.
b.power plants and factories.
c.home furnaces.
d.All of the above
Answer:
D
Explanation:
all of those contribute to air pollution
Answer: D
Explanation:
Is this correct? Also ill mark Brainliest.
What are the roles of consumers? Select two options.
1. to create usable food energy
2. to balance the number of producers in an ecosystem
3. to break down dead organisms
4. to eat other organisms
5. to provide energy for producers
The answers are 2 and 4 because consumers kill to eat which balances the number of producers and they eat other organisms
4. Take a beaker (jar or jug) with some water and put some drops of red or blue
ink in it. Take a tender twig of any flowery plant with leaves and flowers, preferably
white flowers, and put it in the beaker for 6 to 8 hours. What do you observe? For
further examination cut across its stem and look for the presence of colored water.
Explain your observations.
Answer:
Blue Ink patches are observed on the leaves of the plant. Also, on cutting across the stem of the plant, the red color of the solution is found along the length of the stem.
The above observation shows that the stem of the plant conducts water through its length to the leaves of the plant.
Explanation:
The leaves of plant obtain water and minerals from the soil through the roots of the plant. The water is conducted by the stem of the plant from the roots to the leaves of the plant where they are needed for photosynthesis as well as for cooling the plant. The xylem tissue in plants is responsible for conducting water to the leaves of the plant from the roots of the plant through the stem.
The conduction of water from the roots to the leaves of the plant is maintained by capillary action as well as by transpiration pull. Transpiration pull refers to the pull of water by the transpiration action taking place in the leaves of the pant, whereby water evaporates from the leaves of the plant through the opening in the leaf of the plant.
When the blue ink is added to the water, the colored water is conducted through the stem of the plant to the leaves. On getting to the leaves, the water molecules evaporate leaving behind the colored patches fond on the leaves. When the stem of the plant is cut, the blue color is seen along its length showing that the colored water was conducted through it.
How can structural changes to DNA effect the structure and function of an organism?
The structural changes to DNA affect the structure and function of an organism, such as in a mutation. When the mutation occurs, the DNA structure changes, which in turn affects gene function.
What effect does mutation have on an organism?When a mutation occurs in the gene segment, then the structure and function of the gene are affected, especially when the exon portion of the gene is affected, and the mutation can be caused either by radiation or any other chemical factors and can cause many types of mutation, such as the nucleotide mutation, base mutation, etc. Apart from that, gene function is also affected when the gene is present in the heterochromatin region.
Hence, structural changes to DNA affect the structure and function of an organism, such as in a mutation. When the mutation occurs, the DNA structure changes, which in turn affects gene function.
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During photosynthesis, what is the source of the carbon in
the sugar (C6H12O6) that is created?
Answer:
Carbon Dioxide
Explanation:
When amino acids are linked together to form chains the molecule formed is called what?
Answer:
Within a protein, multiple amino acids are linked together by peptide bonds, thereby forming a long chain. Peptide bonds are formed by a biochemical reaction that extracts a water molecule as it joins the amino group of one amino acid to the carboxyl group of a neighboring amino acid.
Explanation:
A homogeneous mixture is known as a(n) A dicolloidal B solution C solvent D suspension
Answer:
A homogeneous mixture is known as B. Solution.
Which optical phenomena are formed by ice crystals?
PLEASE HELP. Which organelle is a place for storage of materials within the cell? *
Vacuoles
Nucleus
Mitochondria
Ribosomes
Answer:
vacuole
Explanation:
the nucleus is the control center
the mitochondria is the power house
ribosomes deal with proteins
hope it helps:)
Which would be the best approach for a student to use in determining
whether an unidentified block is made of metal?
A checking its color
B. determining its mass
C. determining its weight
D. checking its conductivity
The normal pulse rate is ___________. *
1. 70 to 90 per minute
2. 70 to 80 per minute
3. 40 to 70 per minute
4. 70 to 100 per minute
Class 7
C. 70 to 100 per minute
Which type of star cluster forms from tightly packed groups of older stars?
Answer:
Which type of star cluster forms from tightly packed groups of older stars?
binary
eclipse
globularopen
Its c
Explanation:
I did the quizz
A plant can have green (G) or yellow (g) leaves. It can also have a long (K) or
short (k) stem. A scientist is preparing a Punnett square for a dihybrid cross
of a plant with a genotype GGKK. What possible gametes can the plant
produce?
O A. GG, Kk
O B. GK gk
OC. GK, Gk
OD. GK, Gk, gk gk
A student is investigating how substrate concentration affects the rate of anenzyme-catalyzed reaction. Which threevariables should be kept constant in the setup of thestudent’s investigation? Select all three variablesA. temperature of the reactionB. amount of enzymeC. amount of substrateD. amount of productE. pH of the reaction
Answer:
A. temperature of the reaction
B. amount of enzyme
E. pH of the reaction
Explanation:
Temperature should be kept constant because enzymes operate at different activity rates depending on the temperature. The same goes for the pH as well with different enzymes having different optimal pH levels.
The amount of enzyme should be kept constant as well because different concentrations of enzymes can determine how fast the reaction will occur.
Essentially anything that could affect enzyme activity apart from substrate concentration should be kept constant.
How do the daughter cells compare genetically to the original parent cell after mitosis?
Answer:
after mitosis there are two daughter cells, which are genetically identical to the parent cells.
Explanation:
The daughter cells are identical to the parent cells because the cell copies/ replicates its chromosomes. Then it splits the chromosomes equally so that each daughter cell has a complete set of chromosomes.
Parent cell give rise to daughter cell being genetically identical because of it replicates the DNA, so after mitosis, both daughter cell is genetically identical to the parent cell.
How daughter cell is genetically identical to the parent cell?Mitosis results in the formation of two identical daughter cells, each with the same number of chromosomes as the parent cell.
Meiosis, on the other hand, produces four distinct daughter cells, each with half the amount of chromosomes as the parent cell. Because DNA replicates to complementary to other DNA strands.
The mature cell that is undergoing cell division is known as the parent cell or the mother cell, and the new cells that emerge at the conclusion of the cell division are known as daughter cells.
Therefore due to DNA replication daughter cell is genetically identical to the parent cell after mitosis.
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explain which direction the molecules will move during diffusion?
Answer:
Up and down
Explanation:
In the process of diffusion, a substance tends to move from an area of high concentration to an area of low concentration until its concentration becomes equal throughout a space.
Answer:
Molecules will move from an area of high concentration to an area with lower concentration.
1
Which is NOT true of homologous chromosomes? *
(1 Point)
they are identical
they have genes for the same traits
they are in pairs
they have genes that are in the same order
Answer:
Homologous chromosomes are NOT identical.
Explanation:
They contain slight differences in their genetic information, allowing each gamete to have a unique genetic makeup. Consider that the homologous chromosomes of a sexually reproducing organism are originally inherited as two separate sets, one from each parent. Hope this helps :)