What are the abundant elements that make up the composition of Earth's present-day atmosphere?
A) oxygen and carbon dioxide
B) nitrogen and oxygen
C) carbon dioxide, nitrogen, and hydrogen
D) hydrogen and oxygen
B
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Which of the following statements regarding a nucleon is true in regards to nuclear reactions?
A) A nucleon inside a nucleus has a lower mass than a nucleon outside of the nucleus. B) The number of nucleons changes in a nuclear reaction, therefore the mass changes. C) A nucleon has a higher energy inside a nucleus, and releases it when it undergoes nuclear reactions. D) A nucleon's mass is constant. E) A nucleon is more stable outside the nucleus.
The proliferation of plants on Earth did NOTsignificantly impact ____
a. weathering rates b. erosion rates c. soil formation d. atmospheric composition e. UVB radiation
What is the main function of controlled laboratory experiments in the study of geology?
A) They help simulate unseen processes. B) Rocks can be tested for stress, cleavage, and chemical reactions more realistically than in nature. C) Many data points can be generated through laboratory trials to support theories. D) Calculations can be made that are more reliable than the processes in nature.
What are the three types of unconformities, and what is each missing? What will be an ideal response?