They transport oxygen to all the cells of the body
Meiosis is the splitting of haploid gamete cells (Sperm and Egg)
The molecules doesn't need energy to cross through.
The diffusion doesn't need protien, the molecules pass between phospholipids by passes protien. It moves smaller molecules. Facilitated need protien also hormone, and larger molecules.
I wish it makes sense.
How many places are there for electrons in the second shell of an atom? The answer is C) 8 electrons
The remains of fossils give scientists clues as to what the world may have been like a long tome ago. If fish fossils are found on the side of a mountain, there may have been a lake there. If a skeleton is found, they can decide what creature it was.