<span>A. efficiency
The efficiency of a machine is the quotient of work output divided by work input.</span>
Choice A, neutral means the H+ ions equal the OH- ions, giving a pH of 7. The first choice is pretty much that exact definition
The answer is Antennae, ocelli,
and mandibles. Antennae are used by arthropods to sense their environment. Ocelli
also referred to as eye spots, detect light and
the mandibles are used to cut food or used as weapons in some arthropods. Antennae and mandibles are paired
appendages while ocelli are three in some arthropods
such as bees.
I think A. Significant changes in the atmosphere.
Mitosis is when cells divide to create new cells. Therefore, if mitosis didn't happen, all of our cells would die off before dividing and creating new cells, and we wouldn't be able to live since cells are a major part of our anatomy.