Which of the following is not a public health measure that would prevent disease?
a. monitoring and regulating food and water.
b. promoting vaccinations
c. promoting appropriate behaviors
d. exposing individuals to diseases to build active immunity.
i think d not sure though

Research question: why are the carrots that grew on the left side of the garden larger than the carrots that grew on the right side of the garden? which hypothesis is based on this research question? a comparison of people with gardens to people without gardens will show who is likely to live longer. b. carrots are thought to be good for your eyesight and should be eaten regularly. c. carrots that are provided lots of sunlight grow to a larger size than carrots grown in the shade. d. eating fresh vegetables every day is a healthy thing to do.

Anormal strand of dna is shown below, followed by the same strand of dna after mutations have occurred.

In the sentence "a mining company will consider the distribution of coal when deciding how to mine the coal," what does the word distribution mean?