Which of the following is true? a. world hunger has increased significantly since 1970. b. aquaculture has decreased significantly since 1985. c. world grain production has remained stable since 1985. d. more than one in three adults in the united states is obese. e. the main reason why people are undernourished is because they are not educated about proper nutrition.

The correct answer is D. It is true that more than one in three adults in the United States is obese.

Explanation:

Obesity is a nutritional disorder in which the body carries so much body fat that it is harmful to health and is expected to lead to a shorter life span. Individuals with a BMI, a measure of obesity based on length-to-weight comparison, between 25 kg/m2 and 30 kg/m2 are considered overweight, while a BMI over 30 kg/m2 defines obesity.

In the United States, according to official statistics of 2016, 39.8% of the population is obese. Minors suffer obesity rates of 20 percent.

the answer to this question is d

two jet streams that directly affect the formation of weather in the continental part are a polar jet and a subtropical jet. they are responsible for the transportation of weather systems, which directly affect people. the polar front is the boundary between cold air from the north pole and warmer equatorial air. both the polar jet and the subtropical jet blow from the west to the east, and follow the boundary between cold and warm air.

the strongest jet streams are polar jets, while subtropical jets are somewhat weaker.

the right answer is c. the polar jet stream is generaly stronger than the subtropical jet stream.