A student conducted an experiment to find out how temperature affects air in a balloon. He drew a line around the center of the balloon and measured the length around the balloon. According to the chart , what conclusion can you make about how temperature affects he air in the balloon?

Which food would provide you with the most calcium?

In 1999, the u. s. announced trade sanctions worth $116.8 million, targeting goods from france, germany, italy and denmark. the sanctions were in retaliation for a ban on u. s. hormone-treated beef by which organization?

Which of the following ideas did greek philosopher democritus contribute to the atomic theory? a. each object is made up of one atom, which varies in size from very small to very large. b. matter is composed of only one kind of particle, which can be easily destroyed. c. every element has a specific type of atom, which remains the same size in all forms of matter. d. all matter is composed of small particles, which combine to make larger objects.