Answer:
the cellular respiration is energy releasing process.
Answer: A problem with one system could affect other body systems because our body systems rely on each other.
Explanation: Each of your body systems relies on the others to work well. Your respiratory system relies on your circulatory system to deliver the oxygen it gathers, while the muscles of your heart cannot function without the oxygen they receive from your lungs.
Answer:
Explanation:
Two different elements have similar chemical properties when they have the same number of valence electrons in their outermost energy level. Elements in the same column of the Periodic Table have similar chemical properties.
Answer:
the correct answer would be A. Mass extinction involves many species over a short period of geologic time.
Explanation: