The answer is, D. Organ system
Answer:HOW DO INFECTIOUS MICROORGANISMS CONTAMINATE DRINKING WATER? animal waste. Wells and other drinking water sources can be contaminated by storm water run-off from roadways, farms and livestock operations, discharges from sewage treatment plants, or septic system discharges.
The tree's life cycle, Because are world is just getting worse and worse so over time tree's will probably live less of a life then they do now.
Answer: It is B, A, C and C
Explanation:
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I Think The answer is c I hope it helps My friend Message Me if I’m wrong and I’ll change My answer and fix it for you