Judge the following sentence according to the criteria given below: Invasive species can wreak ecological havoc by outcompeting and dominating native populations BECAUSE they lack predators or other natural controls in their new habitats
A) The assertion and the reason are both correct, and the reason is valid.
B) The assertion and the reason are both correct, but the reason is invalid.
C) The assertion is correct but the reason is incorrect.
D) The assertion is incorrect but the reason is correct.
E) Both the assertion and the reason are incorrect.
A
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Which of the following sections along the San Andreas fault remained as a seismic gap as of late 2015?
A. The central "creeping" section B. Loma Prieta C. Parkfield D. The Crystal Springs area south of San Francisco
Residence time is ________
A) the chemical change that occurs with time, when substances alter the growth and development of humans B) average length of time a molecule of a substance spends in the environment C) the length of time it takes for chemicals to be stored in the tissues of living organisms D) the chemical change that occurs with time, when substances are altered by the sun or metabolized by microorganisms E) the length of time it takes to produce toxic chemicals in the environment
Which of the following is NOT a characteristic of commercial agriculture?
A) People fed by commercial agriculture work in other types of economic activity. B) Machinery, fertilizers, and high-yield seeds are used extensively. C) Many people work on these large farms. D) Farms are large. E) Produce from commercial agriculture is integrated with other agribusiness.
Which of the following is a part of the earth system that could be significantly impacted by climate and climate change?
A) deposition of sedimentary rocks B) formation of volcanic islands C) igneous intrusions D) development of metamorphic minerals E) none of the above