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Personal-business letters are prepared by individuals to conduct their personal business. 

Silent Spring, a book describing the effects of persistent pesticides (including organochlorines such as DDT) on the environment, especially on birds of prey and other wild avian species, was written by which of the following individuals?

TRUE or FALSE? The clinical signs of exposures to many ingested toxicants are VERY OFTEN associated with GI (Gastrointestinal) tract signs, such as emesis and diarrhea, even if the “classic” clinical signs of a given intoxication involve primarily another organ system.

An engine is designed to obtain energy from the temperature gradient of the ocean. What is the thermodynamic efficiency of such an engine if the temperature of the surface of the water is 79oF and the temperature well below the surface is 41oF?

Soliciting other students in class to take an exam “together” is suggested and recommended. 

 A small raft 12 cm long, 5 cm wide, and 8 cm high, of which half of it is submerged under water (ρw = 1 g/cm3 or 1000 kg/m3).  When a frog jumps onto it, the raft sinks an additional 0.5 cm into the water.  Use Archimedes Principle to find the weight of the frog.

The length of the large intestine is approximately:

MARK THE THREE (3) MOST CORRECT statements below pertaining to BLOOMS of Microcystis aeruginosa.

What artery supplies the large intestine?

Influx of which of the following cations (positively charged ions) is most critical to the COUPLING of excitation (depolarization) of myocardial cells (cardiomyocytes or cardiac muscle cells) with contraction of these same cells within the myocardium?