Calculate the mass percentage of nitrogen in hydrazinium sulfate
(N2h5)2so4

Explain what a zygote is. use the terms egg cell, sperm cell, and fertilization in your explanation.

Which organ controls breathing? lungs alveoli heart diaphragm

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.