A. Describe the effect of standard of living on tooth decay in town A. b. Suggest reasons why a low standard of living may have the effect you describe in your answer to a.

c. Describe the effect of adding fluoride to drinking water that does not naturally contain fluoride.

d. Suggest reasons for the differences in the results for town B and town C.

In 1992, hurricane andrew left a wake of destruction through florida. one victim of the storm was a reptile-breeding facility. over 900 burmese pythons were set free, and today thousands of pythons live in florida. these pythons are an invasive species, or a harmful species not native to the region. 1. what impacts do you think the burmese pythons might have on local ecosystems

20. in humans, freckles are dominant to no freckles. trey has no freckles and his wife anna grace has freckles, but her dad doesn't. they want to know what percentage of their kids would look like trey. show a punnett square to support your answer.

Explain the source of radioactivity in uranium in earth’s crust by which it produces nuclear radiation