Nervous System Nucleus Nerve Cell Brain
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Answer:
.....
Explanation:
There is no doubt that competition occurs, but less is known about the strength and importance of competition affecting ecosystems. The latter is not easy to get at for living organisms because the role of each organism in the ecosystem needs to be well-known. It is even more difficult for fossil ecosystems because the diet is not fully understood for each species and not all animals have the same preservation potential. Nevertheless, paleontologists have attempted to find evidence for competition between taxa. For example, they have investigated the diversity and abundance through time of two groups thought to have competed with each other by having lived at about the same time and place and having had a similar diet. For example, Sepkoski and colleagues (2000) showed that cyclostome bryozoans became much more diverse in the Cretaceous and Cenozoic, while cheilostome bryozoan diversity declined. Strong competition between these two groups with cyclostomes as the winner is an explanation for this pattern.
Nucleotide-pair insertions or deletions happen in such a way that an extra base pair is added, or an existing pair is removed.
Insertions happen when in a given sequence, another base pair is added resulting in a change in the sequence of amino acids produced. This renders the sequence useless because of the mutation.
Deletions happen when one base pair has been removed and as a result of that, the sequencing process changes.
Because there is a prescribed pattern for sequences, an insertion or deletion in a particular structure can alter the amino acids next in line for production resulting to complications.
Number 4, or D, is correct
