Imagine you are working for the Florida Public Health Department and you have been assigned the task of preventing malaria from spreading throughout the southern Everglades. Which of the following scenarios would have the greatest chance of success?

1. Developing a vaccination that would prevent the ability of the merozoites to reproduce within the hosts bloodstream
2. Devise a insect repellant that would prevent the Anopheles mosquito from biting a human host
3. Spraying the edges of the Everglades with a pesticide that will kill mosquitos
4. All of these scenarios would have a chance of success in preventing malaria from spreading throughout the southern Everglades.

In a laboratory experiment, a fermenting aqueous solution of glucose and yeast produces carbon dioxide gas and ethanol. the solution was heated by burning natural gas in a bunsen burner to distill the ethanol that formed in the flask. during the distillation, the ethanol evaporated and then condensed in the receiving flask. the flame of the burner was kept too close to the bottom of the flask and some of the glucose decomposed into a black carbon deposit on the inside of the flask. during this experiment the following changes occurred. which of these changes involved a physical change and not a chemical change? check all that apply. 1-condensation of ethanol 2-evaporation of ethanol 3- formation of carbon dioxide gas from glucose burning of natural gas 4-formation of ethanol from glucose by yeast 5-formation of a carbon deposit inside the flask

What is the number of moles of chemical units represented by 9.03x10^24? and how do i show work? (dumb it down )

What are scientists who study fossils called? ( a ) astronomers. ( b ) biologists. ( c ) geologists. ( d ) paleontologists.