Which of the following statements is not true of protists? a. protists can be single-celled or multicellular. b. protists can be prokaryotes or eukaryotes. c. protists can be autotrophs or heterotrophs. d. protists can live in freshwater or saltwater environments.

The answer is b. Protists can be prokaryotes or eukaryotes.

The Protista kingdom contains eukaryotic organisms that do not belong to the Kingdoms of Fungi, Plantae or Animalia. These organisms could be multicelled (eg. kelp, slime molds, red algae) or single-celled (Paramecium). They can live in freshwater or  saltwater environments either as autotrophs or heterotrophs.

Life, yes life it self madden

The open ocean begins at the low-tide mark and extends to the end of the continental shelf

above statement is not a true statement about the open ocean because the open ocean has low levels of nutrients. most of the photosynthetic activity on earth occurs in the open ocean within the photic zone. organisms in the deep ocean are exposed to frigid temperatures and total darkness but it does not begin at the low-tide mark.