Answer:
a. Exponential growth curves are common for R-selected species.
Explanation
Exponential growth looks like J shaped curve which is representative of R-selected species. R-selected species have tons of offspring with short life expectancy (or in unstable conditions) such as mice, rabbits etc.
Answer:
A. He took risks in his business transactions
"us" is the bold pronoun. A p<span>ronoun </span><span>substitutes for an implied noun or an antecedent. It helps reduce repetition. </span>
Its dear because its the first word of the sentance