3. Rainforests cover
of the Earth's land surface.
A. 2%
B. 6%
C. 20%
D. 60%

B

Explanation:

Tropical rainforests cover only 7% of the Earth's land surface but contain over 50% of the worlds wildlife.

both male and female gametes are produced by meiosis of the germ cells. therefore, both male and female gametes are haploid. one male and one female gamete unite during the fertilization to form the diploid zygote. in seed bearing plants, pollen grain is the male gametophyte, which produces sperm cells.

well, i believe that the answer is 2. : 3