Protein, the building blocks of proteins are amino acids, different sequences and combinations of these amino acids result in huge numbers of proteins which have a variety of functions.
D. Deforestation
Deforestation is a big cause of mass extinction because it destroys so many habitats leaving hundreds of species without a home or food and it forces them to live in an environment where the
y aren't capable of surviving.
Ribosomes process proteins that the cells need just like the softball team process the information that the coach give them in order to win.
large surface area,
high CO2 concentration
High blood diffusion (from high to low concentration)
Thin walls adjusted for gaseous exchange.