Bio tic Factors. An ecosystem is a community of organisms that interact with each other and with the and biotic factors in their environment. Abiotic factors are chemical and physical factors such as temperature, soil composition, and climate, along with the amount of sunlight, salinity, and pH.
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FaithRawlins14
The bones in your arm are a structure that first appeared in lobe fin fishes, such as the Eusthenopteron fish.
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The answer is D I just took the quiz and got a 100%