Why was it important to establish the Clean Air Act? Select three options.

1) emphasize cost-effective methods to protect the air
2) encourage people to study the effects of dirty air on human health
3) determine ways to reduce the number of premature deaths per year
4) create a regulation that makes any activities that pollute the air illegal
5) make sure that no government activities polluted the local atmosphere

Summarize the work of famous environmental scientists of the past.

This graph represents four ecosystems. each ecosystem has a different number of species, adding to its biodiversity. different colors represent different species. which statements correctly summarize the data depicted by the graph? 1. ecosystem d has more biodiversity than ecosystem c. 2. ecosystem b has more biodiversity than all the other ecosystems. 3. ecosystem a has more biodiversity than ecosystem b but less biodiversity than ecosystem c. 4. ecosystem b has more biodiversity than ecosystems c and d but less biodiversity than ecosystem a. 5. ecosystem a has more biodiversity than ecosystem c but less biodiversity than ecosystem b.

All of the following are typical ways through which to find an apprenticeship except: a. guidance counselor b. trade association c. a vocational school d. job postings