Which best describes a theory?

A. a well-supported conclusion

B. a proven fact

C. an educated guess

D. an untested claim

A scientist is observing surface groundwater features to determine sources of groundwater. Which surface features can the scientist observe and map? Check all that apply. spring geyser aquifer water table artesian well

An example of a surface that would be a good reflector of sound waves would be hardwood floors. True or False?

Are cells created from meiotic divsions identical?

If a cell is isotonic in a 80% sucrose solution, how will the movement of water across the cell membrane affect the size of a cell if it is moved from an 80% sucrose solution to a 40% sucrose solution?

Do chromosomes swap genetic material in mitosis or meiosis

When do babies' eye colors change?

three ways minerals form

Based on your knowledge of signal amplification, which type of chemical messenger can have relatively small concentrations within the bloodstream and still get a large response?

What is the best course of action when a food handler has questions about how to properly wash their hands?

3. Could antibiotics fight off a cold virus infection?