Activity 1: Biogeochemical Cycles Crossword Puzzle
Directions: Fill in the crossword puzzle with words commonly used in studying evolution from based on the guide sentences below. Match the number of the sentence to the boxes placed across or down the grid.

Across:

1. Process by which water changes from a liquid to a gas.

3. Animals need nitrogen to produce__________.

10. Large organic molecule containing nitrogen that contains your genetic information.

13.____________occurs when fertilizer runoff causes excess algae and water weeds

14. Our atmosphere contains 78% free___________.

15. The downward entry of water into the soil or rock surface.

16. Prokaryote responsible for "fixing" nitrogen.

Down:

2. Process where water "evaporates" from plants.

4. Rain, snow, sleet, or hail.

5. Bacteria that break down organic matter.

6. What molecule is produced when nitrogen is fixed?

7. Process by which water vapor turns into liquid water.

8. Animals get nitrogen into their systems by eating________.

9. Oats, peas, beans, corn

11. Helps plants to grow.

12. What "powers" the water cycle?

brainliest ko po makakasagot ng tama :)​