Protozoans yeast mold algae bacteria helmiths
a. multicellular animals, parasitic worms, eukaryotic
b. photosynthetic, unicellular, or multicellular eukaryotic organisms
c. unicellular prokaryotic organisms
d. multicellular, filamentous fungi
e. unicellular, motile, eukaryotic organisms
f. unicellular fungi, eukaryotic

E, F, D, B, C, A

Explanation:

Protozoans are single-celled eukaryotes organisms with high motility.

They belong to the kingdom Protista.

Correct E

Yeast are single-celled eukaryotes members of the fungus kingdom.

Correct F

Mold is a fungus that grows in multicellular filaments called hyphae.

Correct D

Algae is a protophyta, a single-celled or multi-celled photosynthetic organism under the Protista kingdom.

Correct B

Bacteria are single-celled prokaryotes organisms.

Correct C

Helminths are parasitic worms under animal kingdom. Multicellular eukaryotic animals.

Correct A

i'm thinking (a) to keep sand in place; ////////////

explanation: a sand fence or sandbreak, like a snow fence, is used to force windblown, drifting sand to accumulate in a desired place. sand fences are employed to control erosion, sand dune stabilization, keep sand off roadways, and to recruit new material in desert areas.