Fission or Fusion
Occurs on Earth-man-made deliberate actions

i need an image of the diagram

1. efficient use of space

2. elimination of groundwater contamination

3. energy generation

4. lower carbon footprint

many other transport proteins, often called pumps, move materials against a concentration gradient. active transport drives molecules across a membrane from a region of lower concentration to a region of higher concentration. this process, shown in figure 5.1, uses transport proteins powered by chemi- cal energy.

igneous rocks which formed by the crystallization of magma at the surface of the earth called extrusive rocks. they are characterized by fine-grained textures because the rapid cooling at or near the surface did not provide enough time for large crystals to grow.