There are several properties of water that make earth a suitable environment for life, including the fact that as water gets colder, density increases. this increase in density causes water to sink, creating ocean currents. in what area would this happen the most? a. along all parts of the equator b. in the northern hemisphere, within the arctic circle c. in the southern hemisphere, within the tropic of capricorn d. near the equator, within the tropic of cancer

Organisms within a population must compete for resources to survive

How are the testes and ovaries similar? a. both produce sex cells. b. both connect internal reproductive organs to the exterior. c. both transport sex cells from their site of production. d. both store mature sex cells.

Diego conducted an experiment to find out what kind of ball bounces the highest when dropped from a five-foot platform. he used a golf ball, a tennis ball, and a soccer ball. he dropped each ball from the balcony once. diego recorded his observations after each drop. what can diego do to best improve the reliability of his results? a) drop each ball from the platform three more times b) record his observations in more than one unit c) write at least two scientific questions after the experiment is complete d) share his results with other people who have done similar experiments you for the !