Answer:
Fossils are the preserved remains of plants and animals whose bodies were buried in sediments, such as sand and mud, under ancient seas, lakes and rivers. .
Nutrients cross the membrane wall with the help of protein channels.
The answer is A: Mass extinction.
"Abrupt disappearance of many land and marine species" = extinction of many species.
Answer:
mutation
Explanation:
A mutation is a random change to genetic material. ... If a mutation occurs in a gene that results in a change to the sequence of DNA bases, then the structure of the protein that is made may also be altered. This could alter an individual's phenotype
