Muscle fatigue a. occurs when muscles are only partially able to contract.

b. occurs when muscle cell glycogen is depleted.

c. occurs when muscle cell ph increases.

d. occurs due to decreased extracellula

One group of reptiles, characterized by the fossil ark metal x

What are the four basic classes of organic molecules how do they differ structurally and functionally

What did not occur in the proterozoic eon a)the oxygen levels increase greatly in the atmosphere,b)the emergence of the eukarya , c)muti cella’s eukaryotic organisms began to diversify,d)anaerobic bacteria kept thriving with more oxygen