Which of these best describes a laser? 7 of 12 QUESTIONS
O A beam of light containing electromagnetic waves of only one wavelength
A beam of sound waves that can be used to heat or cook food
O A device that uses radio waves to detect the location and speed of objects
O A device used to convert light energy to electrical energy
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Which statements describe resources? one of the factors people use when deciding where they will live is the availability of resources. renewable resources have little value for people. resources are unevenly distributed throughout the world. energy is the world resource which has the highest use. the use of nonrenewable resources has decreased in recent history. the use of resources is evenly distributed throughout the world. the world's oil supply will last for the next forty years if its use continues as expected.

Can bacteria reproduce in a way such that when you start out with two bacteria, you get five bacteria? why or why not? * a. yes, because bacteria reproduce sexually, and can produce any number of offspring, just as humans do. b. no, because bacteria grow at an exponential rate. c. no, because when bacteria reproduce, they split into two parts, and two bacteria splitting would result in four bacteria.

What substance is the most acidic. lemon juice. tomato juice. sodium hydroxide. water