What are most likely to weaken the immune system?

A. mutagens.
B. ions
C. arsenic
D. hormones
E. DNA


Answer: C

Environmental & Atmospheric Sciences

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How are seaweeds classified?

a. size b. photosynthetic accessory pigments c. habitat d. salinity tolerance e. type of holdfasts

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Discuss the artesian system that underlies South Dakota and extends to central Texas in the Dakota

Sandstone What will be an ideal response?

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Which portion of proton-translocating ATPase is embedded in the membrane?

A) a B) b C) F0 D) F1

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Acceleration is a measure of

A. a change in velocity. B. how fast how-fast changes. C. both of these D. none of the above

Environmental & Atmospheric Sciences