Recent evidence from polar ice core analysis shows that, until now, carbon dioxide levels have never exceeded ________ ppm in the last 800,000 years
A) 300 B) 25 C) 200 D) 500 E) 1000
A
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Earth's concentric layer that has the largest volume is the ____________________
Fill in the blank(s) with correct word
A coyote can alter its diet to match seasonal abundance of plants, fruits, or small animals, and would therefore be considered ________
A) density independent and resource-neutral B) an organism with a type II survivorship curve C) an endemic, able to be flexible D) a specialist, able to specialize on whatever is available at the time E) a generalist, able to be flexible
A gas under constant temperature will ________ in volume when the pressure is ________.
A. decrease; decreased B. decrease; increased C. keep the same volume regardless of pressure D. increase; increased
Which of the following is a product of the conflicting processes driven by Earth's internal and external
heat sources? a. wind b. soil c. earthquakes d. sleet e. gravity