An active marine predator is found possessing these characteristics: a series of tentacles (eight of them modified from the foot) on its head, a highly developed nervous system, and elaborate eyes. To which of the following animal classes does this organism most likely belong?

How are humans altering the carbon cycle?

The phosphorous cycle depends on the weathering of ____.

An active marine predator is found possessing these characteristics: a series of tentacles (eight of them modified from the foot) on its head, a highly developed nervous system, and elaborate eyes. To which of the following animal classes does this organism most likely belong?

When you shiver your muscular system is _____.

The phosphorous cycle depends on the weathering of ____.

Seeds contain _____ inside of a protective coat.

Tapeworms are highly specialized worms that make their living as endoparasites. To which of the following phyla do the tapeworms belong?

  The diploid phase of fungi is short-lived and undergoes meiosis, producing diploid spores.

A sea star is an invertebrate.