Pros (good):
- Inexpensive
- Can degrade the crudest oils
- Quick and minor waste is water and CO2
Cons (bad)
- Waves can carry bacteria into place they are not needed or wanted
- Germs may harm marie animals by putting excess CO2 in water
- Germs may be harder to exterminate because they are engineered
Answer:
the complex of nerve tissues that controls the activities of the body. In vertebrates it comprises the brain and spinal cord.
Explanation:
^
Answer:
cells from which all other cells with specialized functions are generated.
Explanation:
they may be used by dividing into two or more cells called the daughter cells
Answer:
b
Explanation:
i just took the quiz on k12 and got it right
Dissolving doe not indicate or guarantee a chemical change. Most of the time it is a physical change.
Unchanged solid in a liquid does not even indicate any change.
Solid floating on top of liquid does not indicate any change, physical or chemical.
When a mixture creates a new compound (gas from mixing solid and liquid), there is a chemical change.
