When Stanley Miller applied heat and electrical sparks to a mixture of simple inorganic compounds such as methane, hydrogen gas, ammonia, and water vapor, what compounds were produced?
A) only simple organic compounds such as formaldehyde and cyanide
B) mostly hydrocarbons
C) only simple inorganic compounds
D) simple organic compounds, amino acids, and hydrocarbons
D
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What early evidence of continental drift was capable of being analyzed to determine ages of crusts?
a. Earthquakes b. Ridge temperatures c. Hydrothermal vents d. Core samples
Which of the following was/were found in the Cambrian seas?
A. sponges and jellyfish B. mollusks and worms C. trilobites and nautiloids D. red and green algae E. All of the answer choices are correct.
The function of the human stomach is
A. storage of food and mixing with digestive fluids to continue chemical digestion. B. to produce highly basic fluids to kill most bacteria. C. promotion of bacterial fermentation. D. to begin the absorption of most small food molecules, especially sugars and alcohol. E. absorption of iron to build hemoglobin for red blood cells.
Kingdom Protista includes
A) archaea & monera. B) kelp & fungi. C) parasitic worms. D) algae & protozoans.