Which kind of government needs a consensus of the people in order to make a change

Herbivores, carnivores, and omnivores are all types a. decomposers b. producers c. consumers d. biomes

What is the magnitude of the acceleration vector which causes a particle to move from velocity −5i−2j m/s to −6i+ 7j m/s in 8 seconds. answer in m/s.

The radius of a sphere is increasing at a rate of 9 cm/ sec. find the radius of the sphere when the volume and the radius of the sphere are increasing at the same numerical rate.