Answer:c. Interstate compact
Explanation:An interstate compact occurs when two or more states in the United States form an agreement.
This agreement is valid when both states approve of it considering the legislature and consent by Cogress.
It can be negotiated amongst those States , comission and authorities are formed through it to make it easier for different states to communicate.
Answer:
Efficacy
Explanation:
Efficacy is defined as the ability to produce a desired or intended result. Celia's focus is to determine the ability of certain programs to produce a desired result, and that is to develop a vocabulary that will set them up for success in kindergarten.
The day starts out bright and sunny. Later, a brown haze develops. this indicates the presence of <u>Nitrogen Dioxide.</u>
Nitrogen dioxide (NO2) is a highly reactive gas produced from the fumes of vehicles, power plants and factories, burning of fuels and garbage, etc.
When NO2 is present in the air in high concentrations, it appears as a brown haze. This is because it reacts with the other chemicals in the air and forms what are called secondary pollutants. Some of these include ozone, particulate matter, etc. which further leads to acid rain.
Nitrogen dioxide can cause respiratory illnesses by irritating the lungs, weaken the immune system, and intensify existing health issues like asthma.
To learn more about Nitrogen dioxide: brainly.com/question/12893682
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