Answer: Triglycerides, cholesterol and other essential fatty acids--the scientific term for fats the body can't make on its own--store energy, insulate us and protect our vital organs. They act as messengers, helping proteins do their jobs
Explanation:
the amount of matters refers to the mass
lungs or ribs that separate the two upper chambers from each other
D. sum of all chemical reactions in an organism
Answer:
slower
Explanation:
winter days shorter farther from the sun causes stuff