Isotopes are atoms of the same element that differ in their:
A) number of protons. B) number of neutrons.
C) number of electrons. D) ionic charge.
Answer: B
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What is considered to be the primary method of succession in the marine intertidal zone?
A. facilitation. B. submission. C. logistic growth. D. tolerance. E. inhibition.
Many benthic organisms are dependent upon the neritic area to:
a. complete their life history cycle with juveniles as part of the plankton. b. provide plankton for food. c. protect them from desiccation and UV radiation. d. both a and b
Atmospheric chemists think that Earth's first atmosphere
a. contained large amounts of molecular oxygen. b. consisted of carbon in the form of carbon monoxide. c. contained nitrogen in the form of ammonia and nitrogen gas. d. contained no oxygen atoms. e. was very similar to today's atmosphere.
You’ve just finished a big meal and are
relaxing in front of a fire reading your favorite book. The ___ division of your ___ nervous system is at work.
a. parasympathetic--autonomic b. parasympathetic--somatic c. sympathetic--autonomic d. sympathetic--somatic e. autonomic--somatic