Fossil A is found in a rock layer above a layer containing Fossil B. Which fossil is probably older?

Which of the following are true about marijuana

After World War I, senators who opposed United States participation in the League of Nations argued that American membership in the organization would (1) limit the power of the president (2) make trade with nonmember nations more difficult (3)

All atoms of the element potassium have 19 protons. One of the most stable types of potassium atoms has the mass number 39.

How do you know that an organism is going through photosynthesis?

The simplest form of all matter are small partials called

How many moles of oxygen gas are produced from the decomposition of six moles of potassium

Why do magnesium and oxygen combine?

When a chemical reaction takes place, the number of atoms of each element in the reactants

A scientist is measuring the pressure that is exerted by each of the following gases in the atmosphere: carbon dioxide, oxygen, and nitrogen. Which term most likely describes what she is measuring?

How would you expect energy to change during a chemical reaction? A. Energy will be increased. B. Energy will be decreased. C. Energy will be converted into another form. D. Energy will be consumed.