Question

1. the first step in the environmental policy process is to ____________ 15. the formation of the environmental protection agency (epa) in 1970 was a landmark event because it: __________ (hint: how did it change the way the government dealt with environmental problems?) 16. ecological services are benefits provided by healthy ecosystems. name two: a) __________ b) __________ part 4: scientific inquiry & experimental design scenario: a farmer wants to test the effectiveness of a new organic fertilizer versus the traditional chemical fertilizer she uses on her corn crop. 17. write a formal hypothesis for this experiment. if __________ then __________ 18. identify the variables: o independent variable: __________ (what is deliberately changed?) o dependent variable: ____________ (what is measured as the result?) o controlled variables: list two things that must be kept the same between the test groups to ensure a fair test.

Explanation:

1. The first - step in environmental policy process is problem recognition, where the existence of an environmental problem is identified.
2. The formation of EPA in 1970 was landmark as it centralized environmental regulation in the US, allowing for a more coordinated and comprehensive approach to environmental protection.
3. Two ecological services are pollination (by insects and other organisms which helps in plant reproduction) and water purification (where ecosystems filter and clean water).
4. A formal hypothesis could be: If a farmer uses a new organic fertilizer on a portion of her corn crop and traditional chemical fertilizer on another portion, then the portion with the new organic fertilizer will have a higher yield or better - quality corn.
5. Independent Variable: Type of fertilizer (new organic fertilizer vs traditional chemical fertilizer). Dependent Variable: Yield or quality of corn. Controlled Variables: Amount of sunlight the corn receives, amount of water the corn gets.

Answer:

1. Problem recognition
2. Centralized environmental regulation, allowed for a more coordinated approach to environmental protection
3. a) Pollination b) Water purification
4. If a farmer uses a new organic fertilizer on a portion of her corn crop and traditional chemical fertilizer on another portion, then the portion with the new organic fertilizer will have a higher yield or better - quality corn.
5. Independent Variable: Type of fertilizer

Dependent Variable: Yield or quality of corn
Controlled Variables: Amount of sunlight, amount of water