Question 3 of 10 The graph shows the percentages of different types of lightbulbs shipped to
consumers in North America over three years.
Percentages of Lightbulbs Sold Annually
to Residents in North America, by Type
2015
2014
Halogen
Incandescent
Compact fluorescent
(CFL)
Light-emitting diode
(LED)
2013
0% 10% 20% 30% 40% 50% 60% 70%
Fluorescent
The demand for which kind of lightbulb has decreased during this time

Which of the following describes a negative feedback loop? when the heart rate is too high, the body sends hormones that continually increase the heart rate higher. when a pregnant woman is in labor, the body sends hormones that increase the intensity of contractions, which then increases the secretion of the same hormones. when blood sugar is too low, the body sends hormones that raise blood sugar until it reaches a typical level and hormone secretion slows. when a person is jogging, the body sends hormones that continually decrease the rate of oxygen supply to the legs.

Which of the following is not a potential result of deforestation?

For the strategies below, decide whether they are best described as demand-side solutions or supply-side solutions to meeting human needs for fresh water. remember that a demand-side solution reduces demand for fresh water, whereas a supply-side solution increases the supply of fresh water. (a) damming a river to create a reservoir (b) desalinating seawater (c) a nation invading a neighboring country to access their rivers (d) raising water prices for consumers and businesses (e) providing tax breaks for companies that use less water (f) replacing inefficient irrigation with more-efficient drip irrigation to grow crops (g) requiring low-flow showerheads in all new homes