Answer:
circulatory system
Explanation:
carries oxygen, water, and nutrients to cells throughout your body. Wastes from the cells are eliminated by your respiratory system, your excretory system, and your skin. Your nervous system controls all these activities with electrical impulses.
Answer:
Photosynthesis transforms light energy into chemical energy by making sugars. Cellular respiration releases the chemical energy from food by breaking down sugars.
These are called sunspots, and appear regularly. They are cooler than the rest of the Sun's surface because of the extremely strong magnetic fields inside of them.
