6. A narrow zone of the earth where land water air interact with each other to support life.

a. atmosphere
b. lithosphere
c. biosphere
d. hydrosphere

7. How do you call a group of individual of a given species that live in a specific geographic area at the given time.

a. community
b. population
c. specie
d. biome

8. Air is composed primarily of nitrogen, carbon dioxide and oxygen, and oxygen takes ____ percent of air's composition.

a. 78%
b. 21%
c. 1%
d. 0.01%

9. Which is not part of the three (3) basic parts of the cell.

a. cytoplasm
b. cell wall
c. nucleus
d. cell membrane

10. When was cell first discovered?

a. 1675
b. 1685
c. 1665
d. 1655

please answer po need ko kasi ngayon ehh baka hindi kase ako maka pass sa test ko ehh pa help po talaga ​