The bark of a tree is impervious to gases and water because bark cells are dead cells of the epidermis and compactly arranged without intercellular spaces. They contain a chemical called suberin in their walls that make them impervious to gases and water and it doesn't allow gases or water into the tree as bark cells are in the bark outer most layer of the tree.
Answer:
no2
Explanation:
beacuse when people number growth too much it can have impact by economic and etc and many people are hunting animals for food and for other thing so we have to balance it
Answer:
During light reaction of Photosynthesis ATP and NADPH are formed.
Explanation:
Reactions driven by solar energy
H2O=H+ + OH-
4OH- - 4e- =4OH
4OH=2H2O+O2
Second reaction
NADH+e- +H+=NADPH
Carbon dioxide fixation occurs during Calvin cycle.Carbon dioxide is being fixed into glucose molecule.
The name of the enzyme is Ribulosebisphosphate Carboxylase(RUBISCO)
The normal substrate for this enzyme is Ribulose bisphosphate(RUBP)
<span>The smell of Danger.
Researchers have discovered a single compound found in high concentrations in the urine of carnivores that triggers an instinctual avoidance response in mice and rats. This is the first time that scientists have identified a chemical tag that would let rodents sense carnivores in general from a safe distance.</span>
