What scientist proposed a link between contaminated water and cholera

A sedimentary rock containing a fossilized sea shell had been found. What does this tell you about the area at the time the rock was formed? A. The area was under water. B. The area was cold. C. The area was muddy and wet. D.

Explain why nitrate fertilizers may not be suitable for application in soils with low redox potential

Are organisms that get food by consuming other organisms called herbivores?

During streak plate technique: Why is it necessary to flame the loop in between streaks? A. To grab bacteria from previous streaked area going into new streaked areaB. In order to count colonies from streaked areas based on previous areasC.

The white blood cells that fight bacterial infections and attack cancer cells and viruses are called Group of answer choices lymphocytes. carcinogens. glucocorticoids. telomeres. neurotransmitters.

Describe the steps involved in the breakdown of glycogen. How does this differ from the formation of glycogen from glucose?

A population of snail darters is drastically reduced by the introduction of a large predator fish into an isolated stream. the predators eat almost all darters less than 5cm long. this is an example of a. the bottleneck effect b.

Which person is most likely to be infected when exposed to foodborn pathogens

What would we expect from a jit plant as compared to a plant that does not use jit?

You should begin a new investigation A. by making up the data that you will report later. B. by reviewing related work done by others. C. by using only your opinion on how the investigation should be done.