A(n) is a possible explanation for a set of observations. law
measurement
hypothesis
experiment

Pick twenty foods and research the amount of total carbohydrates, sugars, and other carbohydrates in them. note: most food labels have this information. record your findings.

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?

In which state was more than 100 billion tons of coal mined in 2005?