It prevents harmful substances from entering a cell. I uses carrier proteins to do so.
Glucose +oxygen to carbon dioxide +water+energy(as atp ) if u want me to do it more detailed just let me know i hope this helps
They both contain nucleus.
All of the consumers would be affected, and be forced to adapt. Since the amount of grass has decreased, the primary consumer would struggle to survive, and most likely, die out. Since the primary consumer has probably died out, the secondary would either die, or be forced to adapt to the situation, or change habitats ( applies to the rest in the food chain / web).
Mechanical energy converting to chemical energy.
