2w + 2l = 63
2w + 2(1) = 63
2w + 2 = 63
2w + 2 (-2) = 63 (-2)
2w = 61
2w/2 = 61/2
w = 30.5
This is if it is a parallelogram & the like
hope this helps
Homeostasis is the equilibrium of a cell.
Autotrophs make their own food through photosynthesis.
Mitochondria undergoes cellular respiration and is often referred to as the "powerhouse of the cell".
An experiment that is conducted within a controlled environment is known as a controlled experiment, similar to a controlled variable.
The correct option is D. Because uranium is a radioactive element, such run off is very dangerous to the people who are living in the environment where the spill occur. The run off must be isolated as soon as possible, by collecting it in a retention pond.