____________ are multicellular photosynthetic algae that occur in ...

[CBme]

____________ are multicellular photosynthetic algae that occur in a great variety of sizes and shapes and are
  classified by their ____________ ____________. Fill in the blank(s) with the appropriate word(s).

Question 2

The ____________ ____________ is the depth where respiration equals photosynthesis. Fill in the blank(s) with the appropriate word(s).

[Carliemb17]

Answer to Question 1

Seaweeds; accessory pigments
Seaweeds; masking pigments

Answer to Question 2

compensation depth

[CBme]

Excellent

[jojobee318]

Thanks for the timely response, appreciate it