What event precedes the powerstroke action of skeletal muscle contractions?

Ineed some everybody. the production of cells during mitosis into specialized function is called: recombination or differentiation

The galapagos island contain 13 species of finches four of the species are seen here it is believed that all of the species had one common ancestor and overtime

Which of these is not an obstical to the future of space exploration? fundingresearch ideas technologytime