The worst choice for energy in the future is:

- Fossil Fuels
- Hydroelectric
- Nuclear Energy

Each pair of clay balls represents two planetesimals. if each planetesimal is composed of the same material and is separated he the same distance, which pair experiences the frayed gravitational attraction?

Isolated volcanic peaks on the ocean floor are

Apuppy’s tendency to chew is inherited through which of the following? a. through learned behavior b.through genes c. through seasonal cycles d. through hibernation