If you have a second fixture around, you can use the same test of putting a tube in a working socket and see if it lights. It is not uncommon in fluorescent fixtures to have the ballast burn out. You may detect a burnt smell or see the bulbs flickering.
Muscle contraction is the activation of tension-generating sites within muscle fibers. In physiology, muscle contraction does not necessarily
Answer: the correct answer is A) All plants should be the same age and health and be given equal amounts of water and sunlight.
Answer:
From what I remember in my 9th grade biology class, it's usually half that amount.