Discuss the specific actions that the EPA has taken to minimize the automobile emissions of lead, nitrogen oxide, and carbon monoxide
What will be an ideal response?
In 1976 the EPA began regulating lead emitted from automobiles, particularly after it was found to deactivate the catalysts in automobile catalytic converters. All automobiles manufactured after 1975 had to have a catalytic converter installed in order to help reduce the emissions of carbon monoxide, hydrocarbons, and nitrogen oxides. Since 1980, the use of leaded gasoline has now been banned in most countries, and global emissions of lead have decreased by 90% since 1970.
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What is the relationship between rocks and minerals?
A. Rocks are the building blocks for minerals. B. Minerals are composed of different rocks. C. Rocks are made up of one or more minerals. D. Minerals are consolidated combinations of rocks. E. Rocks are not composed of crystalline minerals.
The age distribution of a population (relative proportions of people of different ages) is not important when considering the growth rate of that population.
Answer the following statement true (T) or false (F)
A wave crest may change orientation in map view in a process known as ____________________
Fill in the blank(s) with correct word
Igneous means ________________ in Latin
Fill in the blank(s) with correct word