Answer:
A supply of electric charges (electrons) which are free to flow, some form of push to move the charges through the circuit and a pathway to carry the charges.
Explanation:
The mean of 2,5,1,1,9,1,2 = 3
2+ 5+1+1+9+1+2 =21
21/7 = 3
Hope helps!-Aparri
Answer:
A & C
Explanation:
The elephant, by prying at the bark with her tusks is showing that she needs the water from the tree, and that the water is helpful for animals. Hope this helped!
Answer:
A mutation is a change that occurs in our DNA sequence, either due to mistakes when the DNA is copied or as the result of environmental factors such as UV light and cigarette smoke.
Explanation:
It is about 10% of energy that is passed from one trophic level.