I believe the answer is B. Structural adaptations are characteristics that change over time. Some animals adjust over the years to live better in their environments, and this is what it was talking about.
Elephants have long trunks to reach leaves they couldn't get to if their trunks were small. Same with the humming bird and the rose bush. They are adapting. However, the dog is only getting a drink. The dog can do that without having to adapt to anything.
B. <span>It was a failed biological control mechanism for cane beetles.
Hope this helped
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Explanation:
Enzymes bring reactants together so they don't have to expend energy moving about until they collide at random. Enzymes bind both reactant molecules (called the substrate), tightly and specifically, at a site on the enzyme molecule called the active site
Answer:
The correct option is D.
Reason:
Simple diffusion is the process in which movement of molecules take place from a region of higher concentration to a region of low concentration with out expenditure of energy.
