Which of the following processes requires an oxygen-free environment and produces large volumes of methane that can be used for fuel?
A) Pasteurization
B) Composting
C) Centrifugation
D) Anaerobic sludge digestion
D
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Which would last longer in a cooler— a gallon block of ice , or ice cubes
a. ice cubes will last far longer than block ice. b. block ice will last far longer than ice cubes. c. both will equally last longer d. none of the above.
Which association is most accurate?
a. microscale - chinook wind b. synoptic scale - sea breeze c. mesoscale - land breeze d. planetary scale - lake breeze e. universal scale - ocean breeze
Why might the following nuclear reaction not be very good for energy production in a fission reactor? Fe ? Si + Mg + 3 neutrons
A) The material only produces a few neutrons so the chain reaction will not be very efficient. B) The reactants are too small to obtain energy from the missing mass due to strong nuclear force. C) The products are not the right size to obtain much energy from the missing mass due to the strong nuclear force. D) The mass of the byproducts is too high and therefore the energy released will not be high enough. E) Interatomic attraction between the products will impede the separation of the atoms from the unstable nuclei.
Describe the two main methods of cloud seeding and evaluate how effective cloud seeding efforts have been
What will be an ideal response?