Answer:
D. atmospheric aerosols.
Explanation:
<em>Atmospheric aerosols are tiny particles that float in the air. These particles could be liquid or solid and are usually suspended primarily by direct emission into the atmosphere or secondarily by condensation process. </em>
Atmospheric aerosols have numerous effects on the biotic and abiotic factors of the environment. They alter air quality and impact human health in some cases, they can reduce atmospheric visibility, and they also reduce the amount of radiation that reaches the earth by scattering or reflecting some of the radiations from the sun back into space, leading to cooling of the atmosphere.
(a) all cells come from other cells
<span>(b) the smallest living unit is the cell </span>
<span>(c) all living things are made up of a cell or cells </span>
<span>(d) all of the above
it's D
</span>
If a cell has 18 chromosomes the daughter cells would have 18 chromosomes after mitosis.
c. 18
<u>Explanation:</u>
Mitosis is the DNA replication process which maintains the number of chromosomes in daughter cells equal to number of chromosomes in parent cell. In the process the parent cell divides into two daughter cells having the same chromosome number as that of parent cell.
Meiosis is a process different from that of mitosis where each parent cell divides into four daughter cells having half the number of chromosomes present in the parent cell.
Since sex cells have to be haploid in organisms like human beings, it is the process of meiosis that takes place in reproductive cells.
Answer:
The water molecule has a slight negative charge near its oxygen atom and a slight positive charge near its hydrogen atoms, but when a neutral molecule has a positive area at one end, and a negative area at the other, it's called a polar molecule.
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