Plants get the carbon dioxide they need from the air through their leaves. It moves by diffusion through small holes in the underside of the leaf called stomata. These let carbon dioxide reach the other cells in the leaf, and also let the oxygen produced in photosynthesis leave the leaf easily.
Once the DNA of a person has been copied it can be compared to the DNA of other people by using PCR (Polymerase Chain Reaction).
The simple microscopic organisms the only life forms on earth was 560 million years.
False: the dead sea is 8.6 times saltier than the ocean
Answer:
yes
Explanation:
light is main source of energy for photosynthesis to take place
if you recall photosynthesis cannot take place without light
even in dark reaction , light reaction has to produce ATP and reduced NADH which dark reaction will use .
