select all of the following that are true about protists
a. some protists are important autotrophs found in plankton
b. protists are the most diverse group of eukaryotes
c. protists are the most diverse group of eukaryotes
d. all protists are unicellular
e. some protists can produce toxins in deadly red tides and algal blooms
f. products from algae are used as thickeners and stabilizers in food products, cosmetics, toothpaste, and other products
c. protists are the most diverse group of eukaryotes
d. all protists are unicellular
e. some protists can produce toxins in deadly red tides and algal blooms
f. products from algae are used as thickeners and stabilizers in food products, cosmetics, toothpaste, and other products
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In 2009, the President of the United States
a. requested that the Congress proceed with funding for the Yucca Mountain radioactive waste storage facility b. requested the Congress fund another radioactive waste storage facility in New Mexico c. requested that the current nuclear waste sitting in dry casks around the country immediately be moved to Yucca Mountain d. requested that the Congress cut off funding for the Yucca Mountain radioactive waste storage facility while other shorter-term alternative are evaluated e. requested that Congress pass a bill enacting the storage of radioactive waste on the site where it was produced
A valley or anabatic breeze is created when
A) air from lower elevations is heated more efficiently and rises, creating an upslope breeze. B) air from higher elevations is heated more efficiently and rises, creating a mountain breeze. C) air from lower elevations is heated less efficiently and rises, creating an upslope breeze. D) air from higher elevations is heated more efficiently and sinks, creating a mountain breeze.
The _____ bonds between water molecules lead to water's cohesion.
A) ionic B) radioactive C) methane D) hydrogen
What prevents rocks in the mantle from melting?
A. Temperature B. High iron content C. High sulfur content D. Pressure