Which of the following statements regarding the motor unit is true?

a) each motor unit can consist of a different number of muscle fibers
b) all muscle fibers of one particular motor unit are always the same fiber type.
c) a muscle can be composed of a different number of motor units.
d) all of the above.

The graph shows the amount of global warming happening in different ecosystems. which populations of organisms will likely decline the most as a result of climate change, and why? a.coral reefs because of the loss of the symbiotic algae living within their bodies b.penguin populations because the fish they eat will move into warmer waters c.mountain-dwelling birds because rising sea levels will relocate their food sources d.large cats in the rainforest because of decreased habitat loss for their prey

How does the human body lever work?

Interferons play a vital role in the immune system why are interferons so important?