Answer:
30 percent tree cover - 2000 - 2009JPEG ... of forest cover vary widely—as much as 6 percent of Earth's land area, or the equivalent area of China.
Explanation:
Answer:
This statement is true
Explanation:
Different substances such as growth factors and nutrients affect the mechanism of density-dependent inhibition of growth as cells become more and more numerous
Answer:
invertebrates. animal's without backbone.
verterbrates- animals with backbone
Well, nitrogen is the gas that makes up 78% of the earth's atmosphere.
I would guess its in the air that we breathe. I am not really sure. Just basing this answer off of research.
Answer: False.
Explanation:
Nitric oxide(NO) is a signalling molecule synthesised by NO synthase which is a a transmitter in the nervous system. Once it is produced, it diffuses out of the cell and act on nearby cells.
NO have a life time of few seconds and it is extremely unstable and highly reactive, it action is restricted.
The blood vessels uses it to signal the surrounding smooth muscle to relax.
