They do that so when a shark eats something and crumbs come out of its mouth it eats the crumbs
Answer:
Chargaff's rules state that DNA from any species of any organism should have a 1:1 stoichiometric ratio of purine and pyrimidine bases, that the amount of guanine should be equal to cytosine and the amount of adenine should be equal to thymine.
1.) Reduce the number of trips you take in your car.
2.) Reduce or eliminate fireplace and wood stove use.
3.) Avoid burning leaves, trash, and other materials.
4.) Avoid using gas-powered lawn and garden equipment.
A is the correct answer, eukaryotic cells have membrane-bound nucleus, prokaryotic cells do not.