Answer:
B. A change in the DNA sequence of a gene
Explanation:
Maybe if you insert a picture, we can help you.
Answer:
controlled experiment
Explanation:
you need to do it more than once. and you don't need to answer questions
Answer:
Running water
Explanation:
The erosive agent of the Grand Canyon is the Colorado River, a fluvial erosion happens. The fact that the territory is higher, cause more precipitation in the drainage basin of the Colorado River. This greater amount of rainfall gives the stream greater speed, making it more erosive.
