The ring of muscle that controls movement of food from the stomach to the small intestine is the:

Variety of living organisms; includes genetic, species, and ecological types.

Interactions between organisms and their environment impact the organism’s overall population. the jaguar panthera onca is the largest cat in north america. it is found in areas across the southwest, including arizona, new mexico, and texas. it is a carnivore that has powerful jaws and sharp teeth and preys on fish, turtles, tapirs, and many smaller mammals. which shows the relationship between the jaguar and turtles?

This is the nitrogenous base only found in rna