(Q).
Q: Aging occurs as cells lose their ability to do what? Choices: - grow - build - join - divide A:
(A).
divide

(Q).
Q: The part of the ecosystem required by a particular species is endangered when human activity threatens loss of what? Choices: - primary producers - primary speciation - biodiversity - habitat A:
(A).
habitat

(Q).
Q: Unlike eukaryotic cells, dna and rna synthesis in prokaryotic cells occurs together with synthesis of what? Choices: - membrane - fruit - mutation - protein A:
(A).
protein