Answer:
Equivalently, the mass of a particle at rest is equal to its energy E divided by the speed of light squared c2
Answer:
Cells are small in order to get pass barriers. In particular, it has a small surface area to volume racio, which in turn allows it to carry more materials.
Explanation:
If cells are way to massive, it will require much more more energy to move the cell, the cell would not be able to remove all of its waste, and it would not get enough nutrients to survive
A frog's lungs don't work that well, but since it's skin is so thin, oxygen and carbon dioxide can pass trough it.
<span>Photolysis of water by light energy (photons)</span>