An outbreak of a pathogen-caused illness occurs in a small neighborhood in a big city. Which of the following should investigators confirm first? The water supply is not contaminated.
The illness is not carried by insects.
The infected people's homes are clean.
The infected people are not genetically similar.

Which of the following statements is most likely correct about a rock belonging to the jurassic age and a rock belonging to the cambrian age? options: 1) they have identical fossils of organisms that have evolved over time. 2) both have animal fossils preserved in them due to weathering and erosion. 3) they contain different fossils because life on earth has changed through time. 4) the fossils in them were formed on the surface of earth due to exposure to sunlight.

Which tool could you see a plant cell? a. a filter b. a microscope c. a microwave d. an electromagnet

The data below simulate what happened to peppered moths in england after the industrial revolution which statement best describes the process that produced one of the emding populations of moths ?light colored moths were selected for on light colored trees