Complete the sentence. The author MAINLY explains the importance of wind, nuclear and solar energy by... (A) emphasizing that these energy sources can only be created over millions of years.
(B) explaining how these energy sources are in danger of running out quickly.
(C) highlighting that these energy sources have been used since ancient times.
(D) suggesting that these energy sources can be used instead of burning fossil fuels.

hi there!

answer: b. nucleolus

explanation: nucleolus is a structure in the nucleus are ribosomes are made.

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have a nice day! : )

: d

-charlie

you! : )

: d

this is a good question! i'll do some research and come back when i have the answer!

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.