Why was 1990 an important year regarding air quality? select two options.
the united states t...
Why was 1990 an important year regarding air quality? select two options.
the united states took first steps to keep the air clean.
cost-effective ways to reduce pollution were emphasized.
the united states created the environmental protection agency.
modifications and improvements were made to the clean air act.
funding was established under the clean air act to study air pollution.
Answers: 3
Biology, 22.06.2019 07:00
When lactate builds up in a runners muscles it causes a burning sensation what causes this to occur
Answers: 1
Biology, 22.06.2019 10:30
What is the main reason that attitudes are more often revealed in spoken rather than written language? a. in writing, we try to put the "best face" on what we write. b. we speak far more often than we write. c. in writing, we can more easily conceal our attitudes. d. in spoken language, we are often careless in our use of words.
Answers: 2
Biology, 22.06.2019 11:00
Which of these is true of the cytoplasm of an unfertilized egg? a. it is an unevenly distributed mixture of mrna, proteins, organelles, and other substances. b. it does not contain substances that are important in directing development. c. these substances are supplied by the sperm. d. it does not contain substances that are important in directing development. e. development is directed solely by the surrounding cells. f. it is a homogeneous mixture of mrna, proteins, organelles, and other substances. g. it does not contain substances that are important in directing development. h. these substances are produced by the dna of the fertilized zygote.
Answers: 1
Biology, 22.06.2019 17:30
According to these anatomical structures which two animals are probably most closely related
Answers: 2
Mathematics, 08.07.2019 12:00
History, 08.07.2019 12:00
History, 08.07.2019 12:00
History, 08.07.2019 12:00
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History, 08.07.2019 12:00
History, 08.07.2019 12:00
Mathematics, 08.07.2019 12:00