Most organisms in the top levels of an energy pyramid require more food than those on lower levels. On top of this, each level of the pyramid looses energy gained from food. This means that there needs to be more lower leveled organisms for the ones on top to eat in order to gain enough energy. Because of this, there's only enough food for a few of these types of organisms.
I hope this helped! There are probably a few more details you can add, but this is the overall reason :)
My answer would most likely end up being D.
Glucose has a chemical formula of: {C6 H12 O6} That means glucose is made of 6 carbon atoms, 12 hydrogen atoms and 6 oxygen atoms
binary fission?
In binary fission, the parent is split into two daughter cells, each genetically identical while receiving a copy of DNA
Answer: A. True.
Explanation:
The AIDS virus may constantly change it's form in the host body by mutating. The body immune system becomes unable to produce antibodies which can fight against these mutated cells.
Also, the vaccination used for the purpose of immunization will not be able to combat will the causative agent in the body of the host. As the vaccine contains the microbe which can fight against the virus present in the body. But as the virus is changing it's form the microbe may not be able to compete with the virus. Hence, the use of vaccine will become useless.
