Biology is the study of life, and uses the scientific method, the basis of science, to do so. Hypotheses are made, tested, and remade, until a theory is made, which then becomes Scientific law.
1. when a earth worm eat it deposits nutrient by pooping
2. earth worm, feed grass, feed cow, human eat cow
1. Gases are exchanged inside the
lungs through the surfaces of
thousands of alveoli to allow the
diffusion of carbon dioxide and
<span>oxygen
2. </span>Wastes are removed through the excretory system after passing through
either the kidneys urine or the digestive tract feces
3.Blood is redirected after a change in blood pressure after birth. Blood
now flows through the pulmonary artery to the lungs to receive oxygen
4. The lungs alveoli, the intestines, the
pulmonary artery, and the excretory system
hope it helps
