Zooxanthellae are autotrophic marine protists that are found in the living tissues of some simple marine invertebrates such as corals, sea anemones, and jellyfish. Zooxanthellae are ________

A) bacteria
B) golden algae
C) dinoflagellates
D) protozoans
E) foraminifera


C

Environmental & Atmospheric Sciences

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The measure of how harmful a substance is called its ____________.

Fill in the blank(s) with the appropriate word(s).

Environmental & Atmospheric Sciences

Normal Borlaug, who passed away in 2009, pioneered the development of ________

A) GM crops B) monoculture farming C) IPM D) high-yield wheat E) organic agriculture

Environmental & Atmospheric Sciences

At a county fair, the winner of the best garden vegetable competition is asked how she grows such wonderful produce consistently. Wanting not to reveal all of her secrets, she says she uses composted materials. What is this gardener using?

A) A type of soil made of sand and fertilizer B) A type of soil made of a mixture of clay and sand C) Decomposed organic matter called humus D) A mixture of fungi, insects, and worms

Environmental & Atmospheric Sciences

Which one of the following statements about landforms is correct?

A) Alluvial fans typically rim desert valleys. B) Playas form on high cuestas in arid areas. C) Inselbergs are composed of coarse sands and gravels. D) Inselbergs are found in low, circular depressions.

Environmental & Atmospheric Sciences