Water, light energy, and carbon dioxide
Accumulating physical activity experiences is the key to improve our physical activity performances.
Answer:
The species that make up an ecosystem are connected in complex 'food webs' of eater and eaten. When one species disappears, its predators can no longer eat it and its prey are no longer eaten by it. Changes in these populations affect others. Not only that but the ecosystem would be dramatically different or cease to exist altogether.
I believe it is 4 but I may be wrong :|
46 chromosomes. Hope you do well.