What is the final stage of a typical muscle contraction, ending the contraction myofibrils bind to each other in a chain
muscles fiber is activated by ACh
the heads of myofibrils bind
ACh breakdown through its own natural cycle

(Anatomy and physiology)
(15 points!!)

Research cheetahs on the internet what has contributed to this animal becoming "endangered" or "threatened." what animal you have chosen? -cheetah how long has the animal been endangered or threatened? what has contributed to this animal’s endangered or threatened status? why is it important to save this animal from extinction? after researching and gathering facts, write a 350-word letter from the point of view of an animal rights' activist. be sure to include at least five facts that you learned from your research.