How does the circulatory system work at the organ level?
o
blood cells carry nutrients.
o cardiac muscle contracts.
o the heart pumps the blood
o nutrients are delivered throughout the body.

Where do the respiratory and circulatory systems meet? a. in the heart b. in the muscles c. in the lungs d. in the brain

Fungi are classified into how many groups? a. 1 group b. 2 groups c. 3 groups d. 4 groups

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?