I would say the correct answer is "Care for their offspring"
They basically cut the particular region and specified region of the DNA .... this is mainly used in biotechnology ! so answer is first one !
Heyy there.
I'm thinking that it would be B. or D. but idk exactly which one it is.
I hope you figure out wat it is.
B. Thinnest under the oceans and thickest under continents
D. Least dense layer overall, consists of two layers of different thickness
Good Luck and enjoy the rest of ur day!! ^^
The answer is Active transport