I need help with this please I'll give the crown thing to whoever can help me Count the number of cells in each phase for each cell (numbers 1,2,3,4,5)

Which element provides strength to the exoskeleton of clams and oysters

The fish shown above is a tarpon. it is a fast-swimming and powerful open-water fish. its closest relatives, oddly, are burrow-dwelling conger eels that stay on the bottom. both eels and tarpon developed from snake-like larvae that float in the plankton during the first stages of life. once they mature, tarpon and eels are not found near one another in the ocean. the tarpon and the eel illustrate all of the following except

Which kind of worm has a closed circulatory system? a planarian b fluke c pinworm d an earthworm