A food chain always begins with 

A. sympathetic decomposers.
B. photosynthetic autotrophs.
C. pathetic instructors.
D. heterotrophic consumers.


B. photosynthetic autotrophs.

Biology & Microbiology

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The Class Reptilia is a group of species that share a common ancestor, but does not include all of that

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What does it mean that the genetic code is “highly conserved”?

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Biology & Microbiology