A. Solar energy drives both weather and the water cycle.
The testosterone level directly affects the ability of having a satisfying sex. It affects the men reproductive systems.
Through arteries and veins
Consumers.
Producers make the energy themselves (like plants) - if I remember correctly.
Prey are the hunted organisms.
Predators are like hunters who eat other organisms but the correct terminology used in food chains is usually consumers - primary and secondary etc. (again if I remember correctly).
