Changes in frequency & intensity of which types of major weather events have been observed in the past 50 years? Select one: a. droughts b. floods c. wildfires d. hurricanes e. more than one of these f. all of these​

Because?

Explanation:

Soo many people who are in need of help and support them all

1. (1.2kw)x(15/60hours) = .3kwh --> a

2. (5kw)x(90/60hours)x(8cents/kwh) = $0.60 --> d

3. microwave --> 1200 watts = (1.2kw)x(6/60hours) = .12kwh

coffee-maker --> 900 watts = (.9kw)x(10/60hours) = .15kwh

therefore, it requires more energy for the coffee-maker to do the same amount of work.

so the answer is a.

it would lead to upper respiratory infections and pneumonia.