A student performed a trick using a bar magnet and a paper clip. The paper clip was attached to a piece of string that was taped to a table. The clip appears to float just below the magnet. Use what you have learned about magnetic fields to explain how the floating paper clip trick works. Use evidence and scientific reasoning to support your response.

Name two examples of nutritional limitations and food

There are traits like blood type and eye color, and others like speaking english or having a scar. what are the terms used to describe these different types of traits? how are each defined?

In 1914, alabama produced 1.7 million bales of cotton, but three years later produced only 515,000, bales. meanwhile, in georgia, 5.2 million acres of land was dedicated for cotton production in 1914, but by 1923 there were just 2.6 million acres used for growing cotton. all of this was the result of the work of a tiny insect: the boll weevil. alabama and georgia first felt the effects of the boll weevil at different times. what would account for this difference in timing? a) the infestation moved from west to east. b) the infestation moved from east to west. c) georgia had better ways to deal with the problem. d) alabama was further from the insect's point of origin.