What is the energy transformation taking place as a moving roller coaster slowly climbs a steep hill?

Potential energy to kinetic energy
Kinetic energy to potential energy
Radiant energy to chemical energy
Chemical energy to radiant energy

If animal agriculture was eliminated, how much grain would become available for human consumption?

The spermists believed that: the male made the only hereditary contribution to the offspring the male and female traits were blended in the offspring the female made the only hereditary contribution to the offspring the male and the female made equal contributions to the next generation

Explain what a zygote is. use the terms egg cell, sperm cell, and fertilization in your explanation.