What are some alternative energy sources that might be used to replace fossil fuels?
What will be an ideal response?
Alternative sources for producing electricity include wind, solar, geothermal, tidal, and nuclear power. Oil could eventually be replaced by using biofuels such as ethanol (although corn-based ethanol is not a practical solution, as it requires too much energy to produce, and because it ties up land that might otherwise be used for food production).
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In most organisms, ________ is the most plentiful substance making up their mass
A) nitrogen B) water C) carbon dioxide D) oxygen E) solid material
In the partnership of a lichen, the fungus provides ________ and the relationship is best described as ________.
A. Some of the photosynthesis; commensalism B. Most of the photosynthesis; symbiosis C. Structure and moisture-holding ability; mutualism D. Poisons that deter predation; commensalism E. Very little to the algal partner; parasitism
What is a Type I species? A Type III species? Provide an example of each
What will be an ideal response?
Developing low pressure areas generally have ____ air near the surface and ____ air aloft
A) converging; diverging B) diverging; converging C) converging; converging D) diverging; diverging