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White raven [17]
4 years ago
13

Which example of artificial selection is caused indirectly by human activity?

Biology
2 answers:
Shkiper50 [21]4 years ago
8 0
Is d i hope that help
olya-2409 [2.1K]4 years ago
3 0
<span>D.) increased number of small crabs because fishing nets catch mostly large crabs
This situation is caused indirectly.</span>
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Animals require certain amino acids on their diet, an amino acid that is referred to as nonessential would be best described as
Ket [755]
The answer is <span>2 can be made by the animal's body from other substances.

Both essential and nonessential amino acids have essential roles in the organism. Nonessential amino acids got their name because they are not an essential part of the diet. The main difference between these two groups of amino acid is that essential amino acids cannot be made by the animal's body and must be ingested in the diet unlike the nonessential amino acid which can be made by the animal's body.</span>
5 0
3 years ago
1.How would you differentiate your heart rate before and after exercising?
KATRIN_1 [288]
Your heart rate before exercising would probably be the at rest rate of say about 50-60 beats per minute whereas immediately after exercise it could easily be say 115-130 and depending on age there is an optimum heart rate for each age range which decreases somewhat with age. Timing for a full minute your heart rate is best as it will give the actual count whereas if you just do it for 10 seconds and then multply by 6  it would assume it will be consistent whereas it could decrease during the minute so the actual measured count for a full minute is more accurate.
8 0
3 years ago
Read 2 more answers
Please arrange these in the correct order
sammy [17]

b,d,f,e,c,a is the order in which it goes as the scientific method

7 0
3 years ago
Do you think it is possible for scientists to incorporate chloroplasts into the skin cells of humans? What would this mean for h
Alisiya [41]

Similarly to mitochondria on which the animals and fungi rely upon, the chloroplasts are the solar-power plants of the plant cell. With the advancement in the field of genetics and biotechnology, it may be feasible for scientists to incorporate chloroplasts into human skin cells. However, there may be few issues, which the human beings would have to encounter with, these are as follows:  

1. The immune system of the humans may attack the chloroplasts, but maybe they would be safe if they are present within the cell.  

2. As the skin of the humans would be undergoing the process of photosynthesis, then they would have to be in green color, thus, the melanocytes of the skin would have to be engineered in order to generate another pigment.  

3. The humans may get skin cancer and sunburns when they would be out feeding on sunlight, that is, the ultraviolet part of the sunlight would cause the destruction of the living cells.  

4. In order to undergo the reaction of photosynthesis, the humans would require more water than usually required by a normal human being, and this could be a disadvantage in a desert surrounding.  

5. The process would not help to generate much energy for an active species like humans, as the daily energy requirements for a human being would be attained by absorbing around 10000 kJ of energy, that is, around 150 hours in a day of sitting in the Sun, which is impossible.  


3 0
3 years ago
Read 2 more answers
Which expression correctly represents a reproductive
tekilochka [14]
This is referring to meiosis, which happens just once to make reproductive cells, unlike mitosis which is just simple copying.

In mitosis, one cell splits into two, but the number of chromosomes doesn't change. The original cell makes two copies of its chromosomes and divides them up.

\boxed{(2n\rightarrow\ 2n)}

In <em>meiosis</em>, however, our cell doesn't bother making those two copies. It just takes what it has and divides it between two new cells.

\boxed{(2n\rightarrow\ n)}

5 0
3 years ago
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