In the following food chain, which organism is the primary consumer?

Grass ⇒ mouse ⇒ snake ⇒ hawk

hawk
snake
grass
mouse

The mouse would be the primary because it is the first thing that eats another living thing. :p

Explanation:

Hope this helped ya (º–º)

The mouse is the answer. Mainly, because it consumes the grass. The grass is a producer, so the mouse would develop energy from the grass. I hope this helped you. UwU

any abiotic or biotic factor in an ecosystem that causes a population's size to slow or decrease is a limiting factor.

i don't know. if i were you, i would search it up online : d