Answer:
The treadmill has quite a few parts and requires the most maintenance. The maintenance steps include cleaning the deck/motor cover, testing the stop button, vacuuming, checking lubrication, testing the belt tension, and tightening all nuts and bolts.
Answer:
In multicellular organisms, cells are grouped to form tissues. These tissues are specialized to carry out a particular function at a definite place in the body.
I think it is
D.depilitative
Answer:
adaptation, extinction, and the creating of new species
Explanation: