Answer:
The visible bodies of water are referred to as surface water. The majority of fresh water is actually found underground as soil moisture and in aquifers. Groundwater can feed the streams, which is why a river can keep flowing even when there has been no precipitation.
Explanation:
<span>In molecular biology and genetics, mutations are defined as changes in a genomic sequence and the DNA sequence of a cell's genome or the DNA or RNA sequence of a virus. They can also be defined as spontaneous changes in the cell. Generally, mutations are caused by radiation, viruses, transposons and mutagenic chemicals.
</span><span>Transposon is </span>a segment of DNA that is capable of inserting copies of itself into other DNA sites within the same cell.
Answer:
The correct answer is option B which is when Earth is on perihelion, it is the beginning of summer.
Explanation:
Perihelion and aphelion are Greek words. In Greek hellion means the sun and peri means close while ephe means far.
So the perihelion which is normally two weeks after December it shows the starting of summers.
Some areas of earth begin to come in front of sun due to which the temperature of these areas start rising.
The root of the word is the main word of the word!?
Answer: the correct answer is C) the hepatic portal vein.
Explanation:
The portal vein is not a true vein, because it conducts blood to capillary beds in the liver and not directly to the heart. It is a major component of the hepatic portal system, one of only two portal venous systems in the body – with the hypophyseal portal system being the other.