Question

True or False. Write T if the statement is true and write F if the statement is false. ______1. Conserving water is important. ______2. Humans can use the nitrogen in the air by breathing it in. ______3. “Fixing” nitrogen means changing it into a form plants and animals can use. ______4. Both evaporation and transpiration put water vapor in the air. ______5. Clouds form by precipitation. ______6. Oxygen makes up 21% of the air. ______7. If we use too much water, we could use up all of the water on Earth. ______8. Spring floods are a form of run- off. ______9. Nitrogen fixation puts N2 back into the air._____10. Legumes are special plants that can fix nitrogen. Concept Application 1. How do humans benefit from….? a. Water Cycle b. Nitrogen Cycle c. Carbon Cycle 2. What human activities influence the water cycle? List 10 ways in which people might affect the water cycle? A. B. C. D. E. F. G. H I. J. 3. Is global warming part of the Earth’s natural cycle? Why or how?​

Answer 1

Answer:

1.T

2.F

3.T

4.T

5.F

6. T

7.F

8. T

9.F

10. F

concept application

1

1. it gives fresh water and helps recycling water and maintain ecological balance

2.it helps the plants to utilise the nitrogen that is an essential nutrient for plants

3.it helps to maintain multiple life cycles it balances the life giving phenomenon by both plants and animals