A solar eclipse that occurs when the moon's
- umbra does not reach Earth's surface is called
1. an umbral solar eclipse.
2. a total solar eclipse.
3. a penumbral solar eclipse.
4. a partial solar eclipse.
5. an annular solar eclipse.

Now it's your turn to investigate human impact around the world. grab your virtual lab coat and put on your environmental science hat. you will be taking a trip around the globe to explore three locations. at each location, you will investigate the cause and effect relationships of deforestation, desertification, and urbanization. you will also gather evidence of how these factors have impacted the environment over time

Heat from earths interior and pressure from overlying rock transform the remains of marine sediments into

The fruit of a certain plant is sweet and fleshy. the seeds of this plant have a seed coat that is fairly tough. the seeds germinate better if they are exposed to acid, or scarification. what is the most likely type of dispersal for this seed? water animal wind