Which of the following relationships is an example of mutualism? O A vulture feeds on this carcass of a hyena.

A male deer fights with another for the right to breed with a female.
A bird feeds on berries, spreading the plant's seeds to new areas.
O A wasp lays its eggs inside a caterpillar, and the newborn wasps eat the caterpillar.

Firms use marginal analysis to determine prices by a) changing prices in accordance with information from retailers. b) using comparisons with strong competitors to position prices accordingly. c) examining the effect on revenue of small changes to the price of one item. d) trying to minimize production costs by using better and more efficient methods.

How does public opinion differ on foreign and domestic policy issues? how does this affect the policy- making process?

Which amusement park ride utilizes periodic motion a.slide b.bumper cars c.giant swing d.roller coaster