Which of the following statements about secondary succession is true? a. Secondary succession occurs in ecosystems that have no vegetation. B. Secondary succession affects ecosystems that are already established. C. Ecosystems require pioneer species to undergo secondary succession. D. Secondary succession can occur in areas without soil. Please select the best answer from the choices provided A B C D.
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In the african savanna,more wildebeests are born than the environment can support. which is most likely to happen over a period of years as a result
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Amino acids contain the elements carbon, hydrogen, oxygen, nitrogen, and sometimes sulfur. of the 20 amino acids found in humans, 11 are called "nonessential" because they can be manufactured by the body when needed. which elements in these 11 amino acids are commonly obtained from the metabolism of sugar molecules?
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Biology, 22.06.2019 17:00
First dropdown options: a. runoff b. condensation c. evaporation second dropdown options: a. photosynthesis b. transpiration c. sweating third dropdown options: a. raindrops b. clouds c. animals
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Which of the following statements about secondary succession is true? a. Secondary succession occurs...
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