Changes in the dna are called mutations. They can occur spontaneously. Mutations can only be passed down in gametes--sperm and egg cells. with Darwins theory at mind a mutation needs to pass the test of natural selection to remain in the gene pool. So purposly making mutation or altercations may end in diseases/illnesses or in some cases death because they body can not take it.....hope this helps if it doesnt im sorry!
Yes because plant cells have a cell wall and chloroplast which animal cells do not have.
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Answer:
Option (e).
Explanation:
Blood is the main connective tissue of the body. Blood helps in the transport of oxygen, nutrients and the excretory product of the body. Blood also provides immunity as it contains white blood cells.
The resting time is expected during the diffusion process. But the substance continuous back and forth in the body. This is because cells are the main living entity of the organism. The cells are never at rest in order to live and their resting time is not possible.
Thus, the correct answer is option (e).
Answer:
b. it helps the owl avoid being hunted.
It can see clearly using the nocturnal vision and hence escape predators and find prey.
