Why were nations and companies been able to work together to solve the global problem of ozone depletion?
What will be an ideal response?
The ozone depletion issue has been successfully addressed for three main reasons. First, there was no doubt that there was a problem; the scientific evidence was dramatic and convincing, Second, CFCs were not widely manufactured; only a small number of international companies were involved. Third, since it was clear that CFCs would be phased out of a period of years, companies were willing to dedicate economic and creative resources to find profitable substitute chemicals.
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What methods can one use for creating routes from existing linear features?
What will be an ideal response?
The heat energy released when water vapor changes to a liquid is called the latent heat of ____
A) evaporation B) sublimation C) vaporization D) condensation
Mexico is the chief partner of most Latin American countries
Indicate whether the statement is true or false
Material that was once considered to be asthenosphere can change to lithosphere by ________
A) heating so that it will flow B) cooling so that it will break C) thickening to 100 km D) rising to a shallow level