Oxygen moves from the lungs to the blood a. by way of simple diffusion because the oxygen concentration in the blood is lower than than the lungs and diffuses down its concentration gradient.
b. by way of active transport requiring energy to overcome the repulsive forces of the cell membrane.
c. by way of facilitated diffusion through a protein channel in the cell membrane since oxygen would normally be repelled by the membrane.
d. by way of active transport to build up the oxygen concentration in the blood.

Which taxon group is more specific, in regards to organisms that are in that group? mammalia animalia

Four types of motile cells in human body?

Be in this im starting a with you so if you want you can get a partner for this. but basically im going to assign you guys a biome and you have to have a big sheet paper and you will turn it into 4 squares. the top right square is will be a drawing square for a drawing you will make of your biome. the top left square is about the biomes plants and drawings of them. the bottom left square is about the biomes animals. the bottem rights square is about the description of the biome. leave a comment or an answer and i will assign biomes. if your request one thats the one you get. send me a link to the project and i will grade ! im not a teacher btw.