Put these in order for the muscle contraction process

ca^2+pumps restore cato sr → relaxation!
action potential travels down the axon in response to nerve
stimulus.
(myosin binds to actin
action potential causes caat release from sr
myosin pulls actin chain along and sarcomere shortens
contraction!
action potential travels down the t tubule and into
sarcoplasmic reticulum (sr)
ca^2+binds to troponin. troponin moves tropomyosin
uncovering myosin binding site on actin

c. live where it’s cold and icy

sorry to break it to ya but no one can answer your question it's just

jk but i am serious about the part that most people cant answer it beacuse you did not mention the section you are talking about. but it would if you added some detail and were a bit more specific.

the principle of segregation describes how pairs of gene variants are separated into reproductive cells. from his data, mendel formulated the principle of segregation. we now know that the segregation of genes occurs during meiosis in eukaryotes, which is a process that produces reproductive cells called gametes.