Once the ACH is broken down the sarcoplasmic reticulum reabsorbs the calcium and Na+ is pumped back out of the cell. which step in muscle contraction is this?​

Because the earth is not round ,but it may seem round when viewed from ,our planet but true some points earth is not round was an oblate spheroid -a square that it squashed as globe however is not even a perfect oblate spheroid.in fact isaac newton's first proposed that earth was not perfectly round but it was an oblate spheroid instead.that mean a square that is squashed as its poles and swollen at the

D. peatlands,grassland,swamps