Which of the following statements about exponential growth curves is true? a. Exponential growth curves are common for R-selected species. b. Exponential growth curves show fast growth rates followed

Which of the following statements about exponential growth curves is true? a. Exponential growth curves are common for R-selected species. b. Exponential growth curves show fast growth rates followed by slow growth rates. c. No organisms in nature experience exponential growth rates. d. Exponential growth curves are S-shaped.