These pairs are found in double strand of DNA and RNA where the bonds between them connect the two strands making the double stranded structures possible.
Answer: genetic variation is a mutation or a change in the sequence of DNA. It can be preserved if that sequence is needed for a species to survive ( evolution). It can also be preserved if that sequence is strong enough to be passed down from mother to child. The mutation can be eliminated if it causes distress to the animal or if it makes the animals chances of survival smaller. If an extra fin on a dolphin helped it to better escape its predator and better obtain food then this trait may stick around because it is beneficial to the species. If the fin cause the dolphin to swim slower then the dolphin may not survive to reproduce or the trait will not pass on.
Explanation:
who's Mr massey??!
it depends on the scenarios if he's bullying or not
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Answer:
if a players natural resistance to an unbalanced force is called unbalanced force
Answer:
Responding to changes in its environment
Explanation:
Light is an environmental factor and being able to sense and react to environmental changes is a function of life