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:
Plants adapt to the environment by modifying their leaves, stem and roots.
Explanation:
Radiometric dating depends on radiation from carbon atoms which means only carbon based things can be dated. And life is based on carbon so basically only living things can be dated.
If you don't use them they get stored as glycogen, for later use. buy if you're not active, it can lead to obesity.
The answer to this question is the second option
