Answer:
Air inside the guard hairs traps heat close to the body, keeping the reindeer warm even in the frigid, windy temperatures of the tundra. The guard hairs also prevent body heat from escaping and melting the snow if the reindeer lies down, keeping it from getting wet and cold.
1 is catalyst
2 is substrate
3 is active site
4 is activation energy
5 is ions
6 is ion
7 is denature
Answer:
The circulatory and respiratory systems work together to pump blood and oxygen throughout the body. Air moves in and out of the lungs through the trachea, bronchi, and the bronchioles. Blood moves in and out of the lungs through the pulmonary arteries and veins that connect to the heart and thats how it works.
Explanation:
HOW IS YOUR DAY AND THE ANSWER IS B BY THE WAY AND I HOPE I HELPED BYR
Cells undergo mitosis because there must be a process in which the nucleus is divided in order for there to be a successful reproduction for cells.
