Photosynthesis and cellular respiration are two processes involved in the
carbon cycle
nitrogen and water cycle
carbon and oxygen cycles

What happens when the cell copies its chromosomes

Question#29: why does the tropical ocean have a greater temperature range than the temperate ocean?

Which of the following is likely not involved in this example of ecological succession? a) the rotting remains of plants add to the fertility of the soil. b)the soil becomes so fertile that eel grass is replaced by other plant species. c) the roots from plants stabilize the sediment, keeping it in place. d) the concentration of salt becomes so high that all plant life is destroyed.