Ques: Q: What factors consist of parts of the environment that are or were alive, and their remains? Choices: - abiotic factors - xerophytic factors - decomposition factors - biotic factors A:
Ans: biotic factors

Ques: Q: Ecosystem dynamics include more than the flow of energy and recycling of matter. ecosystems are also dynamic because they? Choices: - stay the same - recreate exactly alike - never move - change through time A:
Ans: change through time

Ques: Q: Aids is an infectious disease of which system? Choices: - muscular - digestion - endocrine - immune A:
Ans: immune

Ques: Q: Down syndrome is caused by having three copies of what, a condition known as trisomy? Choices: - genome - variation - DNA - chromosome A:
Ans:
chromosome