What was the order of steps taken by the United States to clean the air?

Explanation:

In America, the air act came as a first federal legislation to take care of air quality in 1963. Then the clean air fund was declared to tackle the problem of air pollution, promote decarbonisation and maintain human health.

The EPA act came in 1970 with the objective of setting national pollution standards. This act was further revised in 1986 to  protect human and environmental health.

the man is bald so he has no hair to get wet

the two answers are a, the population of birds with large beaks will increase on the island, and c, the trait for large beaks will be passed on to future generations through natural selection. the reason for that is because if the birds that have beaks developed for eating small seeds lose all of their food, they will go hungry and eventually starve because they physically cannot eat the large seeds, therefore making the population of large beaked birds higher. also, if the trait of large beaks are dominant on the island over small beaks, then over time the large beaked birds will reproduce more and more, while the smaller beaked birds will reproduce less and less because they can't survive with the food provided. that leads to the trait of small beaks disappearing and the trait of large beaks taking over the island.