Which of the following has a direct role in the nitrogen cycle?
o bacteria
O legumes
O...
Answers: 2
Biology, 22.06.2019 08:30
Which member of the following food chain will be least affected by ddt, a pesticide water pollutant, if bio-magnification is occurring? algae> zooplankton> crayfish> leopard frog> large mouth bass
Answers: 3
Biology, 22.06.2019 09:00
When a gasoline engine burns gasoline, what type of chemical reaction is occurring?
Answers: 1
Biology, 22.06.2019 10:30
Hershey and chase confirmed that dna, not protein, was the genetic material. how do the results of their two experiments support this conclusion?
Answers: 3
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