How did individuals act to help scientists in the Caribbean Sea?
What will be an ideal response?
Citizen scientists (SCUBA divers) were trained to record which types of fish they see during dives. Scientist were then able to keep track of what is going on in the reef ecosystem.
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Pollution cleanup efforts can be ineffective because
a. They often transfer pollutants from one part of the environment to another. b. Once pollutants are dispersed, it costs too much to reduce them to acceptable levels. c. They can be overwhelmed by growth in population and consumption. d. They often transfer pollutants from part of the environment to another, once they are dispersed it costs too much to reduce them to acceptable levels, and they can be overwhelmed by growth in population and consumption. e. There are not enough people with the necessary technical training to deal with the problems.
After about 100,000 years, what is the internal temperature of a nebular disk?
A) 3 000 degrees B) 4 000 degrees C) 100 000 degrees D) 1 million degrees
This type of front has a mass of warm air cut off from the surface
A) warm front B) cold front C) stationary front D) occluded front
In cold weather, when the air is calm, the temperature we perceive—called the sensible temperature—is often ____ a thermometer might indicate
a. lower than b. higher than c. the same as d. a fraction of what e. at least twice as high as