The beginning of life on land is marked by which of the following eras?
a.
proterozoic
b.
paleozoic
c.
cenazoic
d.
archean

The answer is B.  Paleozoic

This era was the first era where insects, amphibians, and reptiles roamed the Earth.

Hope this helps!

B. paleozoic- specifically the devonian period

Ithink the answer is d.

The main role of dna in the  cell is the long-term storage of information. it is often compared to a blueprint, since it contains the instructions to construct other components of the  cell, such as  proteins  and rna molecules.the main function of rna is to carry information of amino acid sequence from the genes to where  proteins  are assembled on  ribosomes  in the  cytoplasm. mark brainliest, my work is good.