When compared to earth’s atmosphere 4.5 bya, earth’s atmosphere today
a. more carbon dioxide
b. more methane
c. more oxygen
d. more copper

a more carbon dioxide

explanation:

answer: a

all pollution being admions

prokaryotic cells do not have a nucleus in which the dna is stored in, it floats freely inside the cell.

eukaryote cells do have a nucleus in which the dna is stored in.

one is through turgidity. this occurs before ground tissue ( collenchyma

and sclerenchyma cells) become well

developed to give structural support to the plant as it grows bigger. the xylem

tissue (composed of rigid tissue) of the young

plant render this support and also maintaining osmotic turgidity of the surrounding

plant cells.