Answer:
Radioactive waste, which can be very bad for humans and cause cancer.
Answer:
Option B
Explanation:
Option D is incorrect, as increased photosynthesis would increase oxygen supply present, not carbon dioxide supply.
Option C is incorrect, as increased decomposition would increase carbon dioxide released and oxygen present is reduced, not increased.
Option A is unlikely as if this were the case, increased oxygen levels would enable bluegill fish to survive as well.
Cell walls are rigid which gives plants their shape. Animals have only cell membranes which allows animals to be flexible as animals are moving organisms. Plants, on the other hand, are sturdy and upright and are sessile organisms. Cell walls allow plants to grow upright as high as their maximum height and to be sturdy enough to survive harsh environments.
Fossil fuels are cool thanks
Programmed Theories - it suggests that our body is designed to age and that there is a timeline that our bodies follow, and switch in our genes that switches off over time.
Error Theories - we age because of environmental hazards that our bodies accumulate over time.
