Answer:
The relationship between environment, variation and selection lay the foundation for natural selection and evolution.
Genetic variations are present among species due to number of reasons like recombination or crossing over during meiosis, mutations, random fertilization etc. These factors bring changes among the members of a species. Some of the species become better adapted to survive in a particular environment whereas some are not better adapted and become extinct over a period of time. The environment selects the organisms that are best adapted to survive and hence lead to variations.
I think the answer could be B
Answer:
Cells need to do between divisions to make sure that a full set of DNA gets passed on to each daughter cell - The DNA must be copied so there is a full set of DNA to pass on to each daughter cell.
Answer:
Explanation:
the repeating rifle, submarine, railroad, telegraph/morse code, ironclad, battlefield medicine, minie ball ammunition
Predation,competition,mutualism,commensalism, amensalism these are the five relationship organisms have with each other
