Answer:
It's 3!
Explanation:
There must be genetic differences so the best fitted organisms will survive. If they were all the same then no one would be best fitted and Natural Selection wouldn't be able to occur
It's not 1 because a food shortage isn't required, there's always competition for food sources
It's not 2 because there doesn't need to be a change in the environment for natural selection, just for evolution.
And it can't be 4 if 1 and 2 are wrong!
Hope this helped!
The glacial budget refers to the input of water to the output of water. The input is when people put water in the glacier and the output is when the glacier starts to evaporate.
Answer: Ascending colon, right colic flexure, transverse colon, left colic flexure, descending colon and sigmoid colon.
Explanation: The ascending colon is the second part of the large intestine and is located vertically; the transverse colon is the third part of the colon and is the most mobile and the longest, approximately 45 cm; the descending colon is the part of the large intestine that continues after the transverse colon down, it is the part of the large intestine in which stool accumulates and compacts; the sigmoid colon is the last portion of the large intestine and is characterized by the shape of the letter S. It measures approximately 40 centimeters and joins the descending colon with the rectum.
Answer:
simple answer for question 2
Explanation:
rocks are composed of grains from minerals,
