A person who's resting heart rate is 55 and after exercise, his heart rate is 160, is said to have a well developed heart muscle. Why is this so?

True or false The size of a force is called its magnitude and all forces have magnitude and direction

Which of these is a possible disadvantage of using wind as a source of energy? A. Wind energy is sustainable. B. Wind turbines can be placed on existing farms. C. Wind turbines take up a lot of psace. D. Wind energy creates new jobs.

Adaptations to deserts life do not include

Which of the barbiturates would you expect to be the more effective sedative? barbital hexethal?

Psychoactive drugs change mood or behavior by acting on

What do you call the part of the body that switches between the lungs and the esophagus?

What is the symbiotic relationship between hookworms and humans?

Which statements describe how the body maintains homeostasis on a hot day? Check all that apply. The nervous system and the muscular system work together. The muscular system and skeletal system work together.

Through cell respiration, plants get energy from glucose. the energy stored in glucose originally came from

Introducing the gene for bovine growth hormone into the eggs of pigs is an example of a process called