1 Classroom Period
According to the scientists in this study, wildness is one of the central qualities of wilderness. To say that an…
According to the scientists in this study, wildness is one of the central qualities of wilderness. To say that an area is wild in this sense, the scientists believed that...
One of the ways that social scientists determine how much benefit people receive from something is to find out how…
One of the ways that social scientists determine how much benefit people receive from something is to find out how much they would be willing to pay for it. In...
Frogs are a species of amphibian. In recent years, there has been a decline in the numbers of amphibians worldwide.…
Frogs are a species of amphibian. In recent years, there has been a decline in the numbers of amphibians worldwide. This decline is thought to be caused by many things....
In 1964, Congress passed a law that established the National Wilderness Preservation System (NWPS). This law identified areas of Federal…
In 1964, Congress passed a law that established the National Wilderness Preservation System (NWPS). This law identified areas of Federal land to be protected as much as possible from human...
Too much carbon dioxide (CO2) in the atmosphere is mostly caused by two things: burning fossil fuels and the loss…
Too much carbon dioxide (CO2) in the atmosphere is mostly caused by two things: burning fossil fuels and the loss of trees. Urban trees help to keep urban areas cooler,...
The scientists in this study wanted to know if cars parked in shady parking lots emit fewer gases than cars parked in…
The scientists in this study wanted to know if cars parked in shady parking lots emit fewer gases than cars parked in sunny parking lots. If that is the case, it would give...
In the past, scientists had estimated how much rainfall is intercepted by trees growing in rural areas. The scientists in this study…
In the past, scientists had estimated how much rainfall is intercepted by trees growing in rural areas. The scientists in this study wanted to know how much rainfall is intercepted by the trees that...
The trees that grow along urban streets are called street trees. Some street trees are planted between the street and…
The trees that grow along urban streets are called street trees. Some street trees are planted between the street and the sidewalk. Other street trees are planted in a strip...
People visit parks to do many different activities, such as play basketball, baseball, sunbathe, swim, walk, picnic, or go bicycling.…
People visit parks to do many different activities, such as play basketball, baseball, sunbathe, swim, walk, picnic, or go bicycling. If park managers know what people like to do in...
Scientists have known that there is a difference between the sun’s visible radiation and invisible ultraviolet radiation from the sun.…
Scientists have known that there is a difference between the sun’s visible radiation and invisible ultraviolet radiation from the sun. Ultraviolet radiation is separated into 3 types: UVA, UVB, and...