Answer:
Your lungs are part of the respiratory system, a group of organs and tissues that work together to help you breathe. The respiratory system's main job is to move fresh air into your body while removing waste gases
Explanation:
Answer:
A food chain only follows just one path as animals find food
Explanation:
A hawk eats a snake, which has eaten a frog, which has eaten a grasshopper, which has eaten grass
In active transport, materials move from an area of high concentration to an area of lower concentration (goes down the concentration gradient) and it requires or uses energy in the form of ATP (adenosine triphosphate)