Which of the following is the cause of more than half of all deaths in the United States?
A) cardiovascular disease
B) flu
C) cancer
D) diabetes
Answer: A
Biology & Microbiology
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Industrial smog would be the result of which of the following?
a. burning fossil fuels b. particulates in the air c. a thermal inversion d. industrial smokestacks e. all of these
Biology & Microbiology
The pulmonary valve ____
a. controls blood flow through the pulmonary artery b. lies between the left ventricle and the lungs c. is anchored by chordae tendineae d. closes when the ventricle contracts e. is also known as the mitral valve
Biology & Microbiology
There are no direct-to-consumer genetic tests available that screen for breast cancer susceptibility
a. True b. False
Biology & Microbiology
Most important vertebrate features like the brain and sense organs are derived from the
A) cerebral cortex B) vertebrate discs C) meninges D) neural crest
Biology & Microbiology