Diatoms are marine algae that have a shell made of silica, what are some of the uses of the silica shell after the diatoms die? Check all that apply
The shells make up the diatomaceous earth used in filters
They are used in food products
The shells can be used in some insulating materials
It can be used as an ingredient in abrasives
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Structures in cells that carry out specific functions.

Can you identify which of the following groups of organisms are, or are not, populations? a. the american bison (bison bison) and grey wolves (canis lupus) currently living in yellowstone national parkb. all of the rainbow trout (oncorhynchus mykiss that) that have ever lived in lake eriec. the group of american bison (bison bison) currently living in yellowstone national parkd. a group of calliope hummingbirds (selasphorus calliope) and a group of rufous hummingbirds (selasphorus rufus) living in the same new hampshire woodse. the northern cardinals (cardinalis cardinalis) living on opposite shores of lake champlain f. all of the whales currently living in the atlantic ocean off cape cod, massachusetts

When water freezes, it . contracts expands