Which of the following is a true statement? a. the president only works at the white house when making an official speech for television. b. representatives serve for six-year terms while senators serve for two-year terms. c. supreme court justices serve for life, so their decisions are based only on the laws. d. heads of federal agencies like the cia (central intelligence agency) report to the chief justice.

The answer would be C. Supreme Court justices serve for life, so their decisions are based only on the laws.

food chain i would say only because there is competition on getting food and survival

while it was true that the cotton gin reduced the labor of removing seeds, it did not reduce the need for slaves to grow and pick the cotton.

explanation:

before eli whitney's invention of the cotton gin, picking and cleaning cotton was a slow, labor-intensive job. workers, usually slaves, had to pick the seeds from the cotton fibers by hand. this invention made it possible to grow large amounts of cotton on big farms and make money.