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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An amoeba ingests large food particles by
Why are plants intelligent?
Answer:hope tht helped
Explanation:
If a strand of DNA has 17% T,what percent will
be G? C? A?
Answer:
If a DNA strand has 17% Thymine (T) the percentage of the other nitrogenous bases will be 33% of Guanine (G), 33% of Cytosine (C) and 17% of Adenine (A), according to Chargaff's law.
Explanation:
The percentage of nitrogenous bass in a DNA strand can be established by knowing the percentage of one of the bases present in the molecule, in this case knowing that Thymine corresponds to 17% of bases.
DNA has the nitrogenous bases adenine (A), guanine (G), thymine (T) and cytosine (C). The bases of one chain are matched with the bases of another, according to the complementarity of the nitrogenous bases, where:
Adenine is complemented with thymine A=TGuanine is complemented by cytosine G≡CAccording to this, DNA molecule there is as much T as A, and an equal amount of G and C, and the percentages of nitrogenous bases can be calculated according to Chargaff's rule.
Chargaff deduced that in a DNA molecule the ratio of purine:pyrimidine is 1:1, so there must be the same amount of thymine as adenine and a similar amount of guanine for the cytosine, according to the complementarity of the bases.
Calculating the percentages, according to the law of the base pair, if in a DNA chain there is 17% of T, in the molecule there is:
A = 17 %C = 33%T = 17%G = 33%Total ..... 100%Body cells are all I need help
What gas in the atmosphere helps to protect us from that radiation
Answer:
ozone
Explanation:
All living organisms on the earth are protected from the harmful radiation coming from the sun by the ozone gas present in the stratosphere. Ozone gas is formed by the action of sunlight only oxygen of the air in the atmosphere.
Answer:
ozone gas
Explanation:
How many of the 17 children have arthritis
Answer:
Why purple guy kill five of the and stuff the in animatronic suit?
Light energy is converted to chemical energy which is what
In guinea pigs, smooth coat (S) is dominant over rough coat (s), and black coat (B) is dominant over white coat (b). In the cross SsBb × SsBb, how many of the offspring will have a smooth black coat, on average?
a. 1⁄4
b. about 9⁄16
c. 1⁄16
d. 6⁄16
e. 2⁄6
Answer:
The correct answer is - b. about 9⁄16
Explanation:
I the given question is given:
Smooth coat (S) is dominant over rough coat (s), and black coat (B) is dominant over white coat (b)
Then cross betwen SsBb × SsBb
gametes:
SB, Sb, sB, and sb for each parent:
SB Sb sB sb
SB SSBB SSBb SsBB SsBb
Sb SSBb SSbb SsBb Ssbb
sB SsBB SsBb SsBB ssBb
sb SsBb Ssbb ssBb ssbb
every offspring with SB in the combination will express a smooth black coat that is 9 according to the Punnett out of 16 offspring.
Which two major parts of the Earth system does this photo most cieery
show?
A. Geosphere
B. Cryosphere
C. Atmosphere
D. Biosphere
Answer:
I'd say that your answers are A) and B).
In the United States, it is possible for discoverers of gene sequences in organisms to patent those sequences. This gives the discoverer property rights for the sequence. Many scientists object to this practice. Which is the strongest scientific argument against allowing a gene sequence to be patented?
Group of answer choices
Patenting sequences prevents conservationists rom understanding the ecological needs of organisms from which the patented sequences come.
Patenting sequences prevents he sequences from being expressed in nature.
Patenting sequences prevents researchers from studying and creating innovations from the patented sequences.
Patenting sequences prevents the sequences from being used in genetically modified organisms.
Answer:
Explanation:
There is little evidence that early fears about gene patenting placing substantial ... owner and do not protect against independent invention), patents require disclosure that ... gene knock-out methods and even for individual gene sequences. ... Human gene patents result from the cloning and description of the sequence of a ...
so option c maybe
What happens in an endothermic reaction?
Answer:
In endothermic reactions, more energy is absorbed when the bonds in the reactants are broken than is released when new bonds are formed in the products. Endothermic reactions are accompanied by a decrease in temperature of the reaction mixture.
How are living things put together?
Answer:
All living things are made of cells; the cell itself is the smallest fundamental unit of structure and function in living organisms. In larger organisms, cells combine to make tissues, which are groups of similar cells carrying out similar or related functions.
Explanation:
1) In yeast signal transduction, a yeast cell releases a mating factor which
A) acts back on the same cell that secreted the mating factor, changing its development
B) passes through the membranes of neighboring cells, binds to DNA, and initiates transcription
C) binds to receptors on the membranes of other types of yeast cells
D) diffuses through the membranes of distant cells, causing them to produce factors that initiate
long-distance migrations
In yeast signal transduction, a yeast cell releases a mating factor that diffuses through the membranes of distant cells, causing them to produce factors that initiate long-distance migrations. Thus, the correct option for this question is D.
What is the mechanism of reproduction in yeast?The mechanism of reproduction is yeast is processed through the process of budding which is a type of asexual reproduction. In this mechanism, A bud is a tiny protrusion from the parent cell that pinches off and produces a new individual when it reaches maturity.
Yeast is a single-celled organism that does not have complexity in its process and functions. So, this organism performs its mechanism of reproduction and other functions through the process of diffusion.
Therefore, in yeast signal transduction, a yeast cell releases a mating factor that diffuses through the membranes of distant cells, causing them to produce factors that initiate long-distance migrations. Thus, the correct option for this question is D.
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Among cattle, coat color is controlled by 2 codominant alleles, RR (producing a red coat) and WW (producing a white coat). The 2 alleles together, RW, produce a “roan” coat. The presence or absence of horns is controlled by the alleles H (hornless) and h (horned), with H completely dominant over h. show what the genotypes and phenotypes would be in both the F1 and F2 generations of a cross between RRHH x WWhh parents.
I will mark branliest to the first good answer
what are the four major groups of plants?
*
Answer: The kingdom Plantae consists of four major plant groups on land: bryophytes (mosses), pteridophytes (ferns), gymnosperms (cone-bearing plants), and angiosperms (flowering plants). Plants may be categorized as vascular or nonvascular.
Explanation:
Answer:
Hope this helps! bryophytes (mosses), pteridophytes (ferns), gymnosperms (cone-bearing plants), and angiosperms (flowering plants).
Explanation:
The kingdom Plantae consists of four major plant groups on land: bryophytes (mosses), pteridophytes (ferns), gymnosperms (cone-bearing plants), and angiosperms (flowering plants). Plants may be categorized as vascular or nonvascular.
(brainlist?)
I’m thinking both what do you all think??
Answer:
I actually think a chemical change
Explanation:
The chemical composition should not change in a physical change so therefore I think it’s only a chemical change
During photosynthesis energy from the sun is converted into
True or False: Food Webs are generally more accurate and detailed models of an ecosystem than Food Chains.
Answer:
True
Explanation:
They have more options and possible ways
Answer:
true,
The food web provides a better model of an ecosystem because the food web is a model between MANY different consumers and producers in an ecosystem. While the food chain is a model for just one consumer and producer. ... Because energy is lost as it moves from producers to consumers, the bottom level is the largest.
Genetic mutations are the direct cause of which of the
following?
Answer:
Inherited mutations are thought to be a direct cause of only a small fraction of cancers.
An acquired mutation is not present in the zygote but is acquired sometime later in life.
Explanation:
If anyone knows this please let me know and explain??
Answer:
I am pretty sure the answer is Melting
Explanation:
Suppose you eat a serving of green beans. What reactions must occur for the amino acid monomers in the protein of the beans to be converted to proteins in your body?
What is formed as a result of mitosis?
A.four genetically different cells.
B.four genetically identical cells
C.two genetically different cells
D.two genetically identical cells
Answer:
D. two genetically identical cells.
Explanation:
Fifty years ago, bed bugs were nearly eliminated in the United States by using of pesticides like DDT. Today bed bugs are back in beds and theaters. DDT is no longer used due to environmental issues. Pyrethrums are currently the top choice for bed bug infestations. Pyrethrums are especially useful to us because they generally have a stronger effect on bugs than on humans and animals.
Some bed bugs had mutations in their genetic code which allowed them to survive the chemical pesticide and they produced chemically resistant offspring. How can this be explained?
Question 5 options:
bed bugs chose other bugs to partner with who had the mutation
mutations involved in the genetic variation of the bugs were chosen by them
bed bugs chose other bugs to partner with who had no mutations
mutations involved in the genetic variation of the bugs are random
d
Explanation:
i looked up and it said mutation random
Black mice and tan mice are native species that are observed in a particular region. Human habitation in the region caused an invasive mouse species to enter the region. These mice are brown and share the same food requirements as black mice. Tan mice have different food requirements. How will this change affect the food web in the region? A. The availability of food resources for black mice and brown mice will decrease. B. The population of tan mice will decrease. C. The black mice and tan mice will compete for food resources. D. The tan mice and brown mice will compete for food resources.
Answer:
A
Explanation:
The correct answer would be that the availability of food resources for black mice and brown mice will decrease.
Since the food requirements of the black mice are the same as that of the invasive brown mice, the available food supply that used to be only for the black mice would now be shared by the two strains of mice. Hence, the available food for the two groups of mice will naturally decrease.
There is no sufficient information to conclude that the population of tan mice will decrease, hence, option B is incorrect.
The black mice and tan mice have different food requirements going by the information available in the illustration, hence, both cannot compete for food resources. Option C is, therefore, incorrect. In the same vein, option D is incorrect because the tan mice have different food requirements from the brown mice.
The only correct option is A.
True or false (look at the pic below for the question)
Answer: True
Explantion:
Answer:
I am going to say true
Explanation:
Plants often store food in their stems. Roots - The roots of a plant grow underground. Roots help to keep the plant from falling over and gather water and minerals from the soil. Some plants store food in their roots.
Please correct me if I am wrong :)
Tissues are groups of similar _____ performing the same function.
Answer: A tissue is a group of similar cells together. An organ is groups of two or more tissue. An organ system is a group of organs.
Explanation:
Which of the following foods contain MOSTLY lipids? (Check all that apply)
Bread
Broccoli
Soda
Pasta
Olive oil
Fish
Butter
Nuts
Steak
Answer:
Olive oil.
Explanation:
Edible oils are lipids. These include vegetable oils such as:
canola cottonseed grape seed corn olive peanut and many othersPerception is:
O A. creating images through your experiences.
O B. picking up information and relaying it to the brain.
O C. the ability to work top down or bottom up.
O D. organizing and interpreting sensory input.
What possible genotypes will the offspring have if the parents' blood types are O and AB?HELP PLEASE!!!
Answer:
. In most cases, an O parent and an AB parent will have only A or B kids.
What wave travels along the surface of a medium?
