In a mature forest in a national park, maple trees grow very large and live more than 80 years. Over an average lifetime, a tree produces more than 100,000 seeds, of which only 2 to 3 sprout and grow to maturity. This maple tree is
A) K-selected and exhibits a type I survivorship curve.
B) K-selected and exhibits a type III survivorship curve.
C) r-selected and exhibits a type I survivorship curve.
D) r-selected and exhibits a type III survivorship curve.
Question 2
Nuclear fusion reactions
A) were used in the atomic bombs dropped on Japan in 1945.
B) require conditions that are not yet cost-efficient for the generation of electricity.
C) are widely used today in nuclear power plants.
D) can only occur in the special conditions of the sun and stars.
