Assessment:
Direction: Read and analyze the questions below. Write the letter of the
correct answer on your answer sheet.
1. Which of the following processes produces carbon dioxide
a. decomposition
c, combustion
b. respiration
d. all of the above
2. Where do most animals get the nitrogen they needed
a. breathing.
c. "foxing' nitrogen.
b. eating other organisms.
d. drinking water.
3. Into which specific process does bacteria are essential
a. combustion.
c. nitrogen fixation.
b. photosynthesis.
d. evaporation.
4. Approximately 78 percent of the Earth's atmosphere is nitrogen gas. How
do we get this nitrogen from the atmosphere to use for building proteins
a. by breathing air
c. by eating plants
b. by eating animals or their d. Both (b) and (c)
products
5. Approximately 91 percent of the Earth's __falls on the ocean.
a. nitrogen
c. water
b. carbon
d. precipitation​