I believe the bone system that red marrow belongs to is D. Skeletal system.
It's (B) A catastrophic event where 90 percent of the ocean's species were lost and 70 percent of the land life was thought to go extinct.
The answer is diffusion.
Facilitated diffusion is a process by which molecules are transported across the plasma membrane with the help of membrane proteins.
Homo meaning same
sapien meaning from apes
