Over the past several decades, the overall trend for earth's temperatures has been
A. decreases in overall global temperatures at an accelerating rate, a phenomenon known as global cooling.
B. a gentle trend towards colder winters and hotter summers, which averages out to be very little overall global temperature changes.
C. cyclical periods of warming and cooling, known as global climate change.
D. increases in overall global temperatures at an accelerating rate, a phenomenon known as global warming.
Answer: D
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About how many million years ago did humans of the genus Homo first inhabit eastern Africa?
a. 2 b. 4 c. 6 d. 8 e. 10
Glucose is not our only food source, nor the only one we can utilize in our bodies to generate energy. Other primary sources of energy include other sugars, proteins, and fats.What metabolic intermediate are fats primarily converted into?
A. Electron transport chain components B. Citric acid cycle intermediates C. Acetyl-CoA D. ATP Synthase E. Pyruvate
Which agent can cause an infection that can ultimately develop into pelvic inflammatory disease in women?
A) herpes simplex virus type 2 B) papilloma virus C) Candida D) Chlamydia
You notice a sign in a public restroom that states "Sanitized for your safety." This means
A) sterilizing chemicals have been used in cleaning. B) antiseptics have been used to clean the area. C) degerming methods only have been used to clean the restroom. D) methods of disinfection that meet minimum standards of microbial removal have been used. E) only "organic" chemicals were used in the cleaning process to reduce microbial numbers.