Which immunoglobulins attack invaders before they get to the blood stream?

A) IgA
B) IgD
C) IgE
D) IgM


A

Environmental & Atmospheric Sciences

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What is the cause of Jupiter's slight flattening, which results in an equatorial diameter 6% greater than its polar diameter?

A. its frequent reversal of its magnetic poles B. nuclear fission within its core C. its massive gravitational pull D. its rapid spin cycle

Environmental & Atmospheric Sciences

All of the following are true statements about the Yucca Mountain Waste Disposal Site except

A. it is 200 to 400 meters above the water table and is in a region with an arid climate, so that groundwater pollution potential is minimal. B. it has been designed for long-term storage of high-level nuclear waste. C. it is located in a low-permeability, high thermal resistant rock. D. it is more than 100 miles from a major metropolitan center.

Environmental & Atmospheric Sciences

Which plankton are the most numerous primary consumers of the ocean?

a. cyanobacteria b. diatoms c. dinoflagellates d. coccolithophores e. zooplankton

Environmental & Atmospheric Sciences

Which of the following natural threats to human health is least predictable, meaning that there is usually the least amount of lead time before a disaster?

A) Earthquakes, tsunamis, and tornados B) Forest fires C) Hurricanes and floods D) Severe snowstorms

Environmental & Atmospheric Sciences