B. some species die out when environmental changes occur
Animals will asphyxiate a condition in which the body and most importantly the brain lacks a supply of oxygen. which is called or known as oxygen deprivation
When a cold front happens when speaking gusty, there is a sudden drop in temperature, and there is heavy rain. When warm front approaches, The air becomes noticeably warmer and more humid than it was before.
Answer:
The main purpose of the circulatory system is to transport blood, oxygen, nutrients and hormones to and from different cells and tissues throughout the body.
Explanation:
This system works hand-in-hand with the respiratory system to facilitate the exchange of oxygen and carbon dioxide within the blood per the alveoli in the lungs.
D. A change in the amount of polar ice will alter how ocean currents move
