As trends in global warming continue, people are becoming more and more concerned about the possible effects on specific habitats. Coral reefs and polar ice caps are just two of the many endangered ecosystems due to global warming. The monitoring of life on Earth gives rise to career opportunities in the field of A) ecology. B) genetics. C) medicine. D) animal behavior.

Aballoon is rising vertically upwards at a velocity of 10m/s. when it is at a height of 45m from the ground, a parachute bails out from it. after 3s he opens his parachute and decelerates ata a constant rate 5m/s.when. (a) what was the height of the parachutist above the ground when he opened his parachute? (b)how far is the parachutist from the balloon at t=3s? (c)with what velocity does the parachutist hit the ground? (d)after how long does the parachutist hit the ground after his exist from the balloon?