When it is winter in North America it is summer in South America. Explain why this happen.

What does gradualism and punctuated equilibrium have in common

Aflashlight produces light using energy from the batteries. in which order does the energy change form? a. from chemical to electric to light energy b. from electric to light to chemical energy c. from electric to chemical to light energy d. from light to electric to chemical energy

Human genes only differ by less than percent. a. 1 b. 6 c. 11 d. 16