Answer:
The two requirements for something to be matter are
1. Mass
2. Volume
Answer:
(d) None of the above
Explanation:
The pH of your stomach must be highly acidic, because the optimum pH for pepsin, the chief stomach enzyme, is 1.5.
(a) and (b) are wrong, because both conditions are basic.
(c) is wrong, because pH 7 is neutral.
The nucleus is the part which controls the cell and is semipermeable
An ectotherm gets its heat from external sources
(Remember "ecto" means outer, "endo" means inner)
Usually microorganisms help keep the nutrients in the soil cycling allowing for nutrients to be distributed all over. But they do what they can unless the disease is damaging to the soil itself therefore damaging the microorganisms working to keep the plant functioning.
