The answer is c the capillaries are tiny they branch off of the arterioles and go back to the vienules the arterirs carry blood away from the heart in most cases it is oxygen rich then veins bring blood back to the heart usually oxygen depleted. this is true in most except the pulmonary artery and vien<span />
I'm going to say since I cannot see the graph i'm guessing that it shows an enzyme at its peak and lowering so i'm going to say the first one 1) There is a specific pH range in which the enzyme effectively lowers the reaction's activation energy
Explanation:
The collaboration of human beings began in the past especially to offer security for offspring. Families living in communities had prolonged life for offspring due to collective security for the benefit of the whole community. Even when some members of community went to hunt or gather food, they are assured to the security of their offspring living in the community. It is believed it is such acts of collaboration that evolved into the current social fabric of society.
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trees do not fix N2 from air they fix oxygen with the help of N2 fixing bacteria . so trees do not fix N2
