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8 science regents p1

Ecology

Questionanswer choicescorrect answer
1.) One biotic factor that affects consumers in an ocean ecosystem is A. number of autotrophs B. temperature variation C. salt content D. pH of water A
2.)Some bloodsucking insects insert their mouthparts directly into a blood vessel and withdraw blood. Other bloodsucking insects have mouthparts that cut through the skin and blood vessels and produce a small pool of blood from which they feed. Both mouth A. autotrophic nutrition B. heterotrophic nutrition C. regulation D. excretion
B
A
C
D
A
C
C
B
C
B
C
D
B
Created by: 28catalanoa
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