Which of the following best describes the interaction between earth’s crust and living organisms?
a. raw materials essential for life are cycled through earth’s crust.
b. fossil fuels are a valuable energy source for the biosphere.
c. the continental crust allowed the evolution of life on land.
d. the crust recycles the organic materials in sedimentary rock.
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Ascience research group is testing a new type of plant food. one trial is conducted in a controlled experiment. the data from the trial show that the plant that received the new food grew faster than the control plant. the group announces that the new plant food makes plants grow faster. what is the main weakness in this scientific claim?
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Which of the following best describes the interaction between earth’s crust and living organisms?
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