Answer:
microscopic and unicellular, with a relatively simple cell structure Bacteria are the most abundant of all organisms.
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Answer ➜ Competition and lack of nutrition are probably the main reasons and according to Biologists, the reason Earth is not covered with bacteria is that conditions are not ripe for bacteria to develop.
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Answer:
limnetic (pelagic) zone is your answer
The renal corpuscle includes "c" <span>glomerulus and bowman's capsule, you should have researched it first, i simply got the answer here:
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https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=2&ved=0ahUKEwjMu-GFktTTAhVCxmMKHSGUAz4...
Environmental factors do influence natural selection because they can increase or decrease the population of a species, by selecting those with only favorable traits.