Which type of muscle tires quickly during exercise. smooth muscle breathing muscle skeletal muscle cardiac muscle?

Describe the response the kidneys have to dehydration and excessive water intake. what happens to the concentration of urine in each case ?

Hector is back from his morning run and is feeling light-headed because his energy is depleted which food item will provide him with a quick source of carbohydrates

Asquirrel population lives in an area. over many years, a river in that area grows wider and stronger, eventually forming a canyon. the squirrel populations on the two sides of the canyon can no longer mate with each other and ultimately form distinct species. this is an example of