Does carbs, protein, nucleic acids or lipids aid in cell transport?

If a strand of dna has 35% thymine. what is the percentage of cytosine, adenine, guanine?

Hemoglobin is a proton that carries oxygen around the body what is hemoglobin made from

Which short-term environmental changes would a very small asteroid or comet impact on earth most likely cause? check all that apply. flooding extinction craters on surface changes in weather patterns death of organisms and populations