Currently, renewable energy provides about percent of the world's energy needs. Two factors that must be considered during a switch to a reliance on renewable energy are and . *

the backbone of the dna and rna compound is sugar phosphate.

"it built up in the atmosphere"

i think thats it, idk, i tried looking for this exact q& a for grad. and idk if i got this question right or sorry if im wrong

it should be d) transitional fossils.

they show the gradualism of evolution throughout a period of time

it is because according to the process , scientific inquiry is a process with many steps because each step occurs to the scientist and if you just skip a step there would be no steps to scientific inquiry.