When you see someone you have a crush on and your heart pounds, your hands get sweaty, and your cheeks feel hot, your nervous system is active

Explain the source of radioactivity in uranium in earth’s crust by which it produces nuclear radiation

4. if a cell is placed inside a solution that has a higher concentration of solute than on the inside of the cell, what can be said about the movement of water? a. water will move out of the cell, causing it to shrivel. b. water will move in and out of the cell at the same rate. c. water will move out of the cell, causing it to swell. d. water will move into the cell, causing it to swell.

When fossil fuels are burned, carbon dioxide is released. how does this gas impact the environment?