McGraw-Hill Education 6. Analyze A man living on the lakeshore feared that the blowing, shifting sand
eventually would cover his house. To prevent this from happening, the man
researched the area and learned that jack pine trees grew on the tall dunes that did
not move. He planted young jack pines on the sand hills close to his house, but his
plan did not work. The jack pines died within a month. Why did the jack pines die?

Animal bodies (and even plant bodies for that matter) are complex enough that life couldn't exist without enzymes. enzymes are usually large, complex biological catalysts that are expensive to make. enzymes speed up the rate of chemical reactions without being used up during the reaction (they can be reused many times). they are highly specific in the reactions they regulate. knowing what enzymes are and how they function, why does this explain why complex life forms could not exist if there were no enzymes.

The finches on the galapagos island were similar in form except for variations of their beaks. darwin observed that these variations were useful for: attracting a mate defending territory building nests gathering food

Sexual reproduction in the parent cell will result in offspring with a) identical genetic information. b) half the genetic information. c) double the genetic information. d) four times the genetic information.