What part of the lower respiratory tract is made up of tiny air sacs where oxygen and carbon dioxide are exchanged?
a. bronchioles
b. larynx
c. alveoli
d. trachea

not sure if this is what you'r looking for nnew= nold

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.

what are the options? add them, then i will be glad to .

it depends on how much it could carry.