How do phototrophs and chemotrophs depend intimately on eachother?
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What are some characteristics of a free enterprise economy?

As the earth formed, the force of gravity increased due to increased mass. what effect did this increased gravity have on the forming planet?

Chimeras are interesting organisms that have two different sets of dna. chimeras occur when when two different zygotes fuse to form one organism. some chimeras have no outward symptoms,while some have two different eye colors it two different blood types what roles do mitosis and meiosis play in the process