During cloud seeding, dry ice is much easier to handle than silver iodide, because it can be supplied to the cloud from burners located either on the ground or on the wing of a small aircraft
a. True
b. False
ANSWER: False
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Which of the following is the expected temperature at which a cloud becomes completely glaciated?
A. 0°C B. -5°C C. -18°C D. -40°C
Refuse-derived fuel has ________ energy content than raw refuse, but requires energy ________ before burning.
A. About the same; enrichment B. A lower; to sort C. A lower; enrichment D. A higher; to sort E. A higher; enrichment
What may result from lithification?
A) Sediment becomes a sedimentary rock. B) Metamorphic rock becomes a sedimentary rock. C) Igneous rock becomes a metamorphic rock. D) Sedimentary rock melts.
How does natural selection operate Select all
a. natural selection changes the allele frequencies of an individual b. individuals with adaptations to their environment pass on their genes to more offspring c. organisms acquire new physical traits to survive in an environment, then they pass these on to offspring so that they can survive d. natural selection acts on genetic variation of organisms in a population e. natural selection produces differences in traits, and these traits can either increase or decrease survival and reproduction