Glomar Challenger is known mainly for:
a. being owned and operated simultaneously by four governmental agencies
b. being the first nuclear powered scientific research vessel.
c. taking the first complete cores of deep-sea sediments.
d. being the first modern scientific survey ship to circumnavigate the globe.
c
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Why might increasing the temperature alter the rate of a chemical reaction?
A. The density decreases as a function of temperature and this leads to an increase in volume which drops the rate of reaction. B. The molecules are less reactive at higher temperatures. C. The molecules will more likely combine with other atoms at high temperature to save space. D. The molecules will have a higher kinetic energy and bump into one another harder. E. none of the above
Most cyclones and anticyclones are generated by upper-level air flow
Indicate whether the statement is true or false
If estimates of an extinction rate 10,000 times greater than the background rate are correct, then what percentage of all species will be extinct by the end of this century?
A. 5-10% B. 10-25% C. 25-33% D. 25-50% E. 60-75%
________ are mounds and ridges of sand that are deposited by the wind
A) Ventifacts B) Desert pavements C) Blowouts D) Dunes