A tropical cyclone in the southern hemisphere rotates ________ and has a storm track turning ________.
A) clockwise, south and southwest
B) counterclockwise, south and southwest
C) clockwise, north and northwest
D) counterclockwise, north and northwest
A) clockwise, south and southwest
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Which type of secondary structure can be either intermolecular or intramolecular?
A) a-helix B) b-pleated sheet C) hairpin turn D) all of these
When a very cold air mass covers half of the United States, a very warm air mass often covers the other half. Explain how this happens.?
What will be the ideal response?
Zooplankton populations in Lake Erie and the Hudson River have declined by up to 70% or more since the arrival of zebra mussels because ________
A) zebra mussels feed on cyanobacteria, which zooplankton need as a food source B) zebra mussels carry a parasite that kills zooplankton C) zebra mussels prey on zooplankton D) waste from zebra mussels promotes bacterial growth that kills zooplankton E) zebra mussels block sunlight penetration into lakes and thus prevent zooplankton from photosynthesizing
Which of the following statements is true about biodiversity?
A. The age of an ecosystem can be an indicator of biodiversity B. We know why biodiversity increases at lower latitudes C. There are few species left on Earth to discover D. Biodiversity is evenly distributed across the planet