How is cellulosic ethanol different from traditional corn-based ethanol?
A. It can be made from the nonfood portions of plants and from wood.
B. It is made from sustainably grown corn.
C. It can be made from used grease and oil from restaurants.
D. It is made from wheat or rice grains instead of corn
Answer: A. It can be made from the nonfood portions of plants and from wood.
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Which of the following is the main reason why vegetables take longer to cook in boiling water at high altitudes?
A. The temperature of the boiling water decreases with increasing altitude. B. Saturation vapour pressure decreases with increasing altitude. C. Water boils at a higher temperature at higher altitudes. D. There is less oxygen in the air at high altitudes.
A farmer is tired of watching crops die in the field from several pest species. She decides that next year she is going to use every type of ecological pest control she can find to address the problem
Over the winter she gets ready, ordering pheromones that interfere with the reproduction of the pests, sterile male flies that will try to reproduce with some of the pest flies, and wasps that lay their eggs in the larvae of another pest. It is expensive, but she thinks this should work well. Which of the following forms of control is she not using? A) Natural enemies control B) Cultural control C) Genetic control D) Natural chemical control
Which type of basaltic lava flow has its surface covered with sharp-edged, angular blocks and rubble?
A) pillow lava B) aa C) pahoehoe D) scoria
In the Northern Hemisphere, storm surge is always most intense on the ________ side of the eye (viewed from the ocean) where winds are blowing ________ the shore.
A) right; toward B) northern; toward C) southern; away from D) left; away from