What is the characteristic of this tissue type? striations
one nucleus per cell
spindle-like shape
branched fibers

phylogenetic tree is the tree of life or evolution tree. it shows the different branches of evolution. the sequence goes like tissues - coelom - backbone - endoskeleton - segmentation

when a reversible reaction is occurring in both directions at the same rate; the products and reactants do not change in concentration. a chemical reaction where the compound is broken into its constituent parts.

c. movement because i took the test and it lets me review my answers