Organisms That Move on the Seafloor Are Called ____, While

Q48: Phytoplankton are primary producers.

Q49: Trilobites, an abundant organism during the Early

Q50: Greatly accelerated extinction rates resulting in marked

Q51: The Cambrian explosion refers to _.<br>A) a

Q52: Burrowing worms are examples of planktonic organisms.

Q54: Which group feeds on microscopic plants, animals,

Q55: Consider an early reef-builder of the Cambrian,

Q56: Diatoms and algae are examples of phytoplankton.

Q57: Describe the components of the present-day marine

Q58: Which characteristic does not apply to trilobites?<br>A)