Myosin and actin protein filaments attach to each other . Calcium ions release into myofibrilles . Myosin filaments pull on the actin filaments
Answer:
Kitten
Cactus
Mushrooms
Bacteria
so all but Rock
Because only living things have cells
Fact: <span>Organisms are classified based on their physical characteristics. For example, some organisms have a backbone, and other organisms do not have a backbone. Some organisms are single-celled, and other organisms are multi-celled. The classification order that scientists use is Domain, Kingdom, Phylum, Class, Order, Family,Genus, and Species.
</span>Evidence: Je<span>llyfish and corals cannot be called zoophytes, meaning animal-plant. They are neither animal nor plant but have characteristics of both groups.</span>
