V-shaped valley
As the river erodes downwards the sides of the valley are exposed to freeze-thaw weathering which loosens the rocks (some of which will fall into the river) and steepens the valley sides. The rocks which have fallen into the river help the process of corrasion and this leads to further erosion.
Answer:
It looks like there are two main ways to modify humans :)
Explanation:
1. <em>Somatic genetic modification</em> would be the direct way to genetically modify through adding or cutting some of the cells of an existing person usually to alleviate a medical condition (but the results are not hereditary)
<em>2</em><em>.</em><em> </em><em>Germline</em><em> </em><em>genetic</em><em> </em><em>mod</em><em>ification</em> is also a direct way to genetically modify but instead using molecular engineering techniques (this would be hereditary)
Answer:
20,000 genes...
Explanation:
<h3><em>Human genes vary in size from a few hundred bases to over a million bases..So every human has 20,000 genes and 3,000,000,000 bases.Your entire sequence of genes and bases is called
genome..</em></h3>
Answer:
<em><u>B</u></em>
Explanation:
cell is the first organization level
tissue is the second level
organ is the third level
organ systam is the fourth level
organsim is the last organization level