Answer:
A
Explanation:
Reptiles arose about 310–320 million years ago during the Carboniferous period.
DNA is the molecule that contains the genetic information that is transmitted hereditary and controls the cellular functioning
the answer is... hydrocarbons
I think the second option is the best (by making the ramps height and length equal) because the first option will require more pushing, the third option will only make the ramp lighter which could cause it to not stay in place, the last option would make it harder to push the boxes up because the rubber will make it harder to slide the boxes up. I hope this helps:)
Answer: Organelles, Cell, Proteins, Tissue, Organ, Organism.
Explanation: I hope this helps, I had this subject a month or so back and I still have my notes.
