This is when you have the same concentration of dissolved substances inside/outside the organism?

In this type of asexual reproduction you have the splitting of one organism into two smaller organisms of equal size 

This sort of sediment comes from land?

These organisms are photosynthetic important primary producers, and have a shell of silica called a frustule?

The dark, vast bulk of the ocean where sunlight never reaches?

These organisms have a symbiotic relationship with corals?

These are organisms that break down dead organic matter?

These are organisms that control their internal concentrations of solutes and water.

This is sand deposited by wind?

These are cold-tolerant organisms?