Cold, dense water with high salinity sinks as it moves toward the equator. as it is heated, it becomes less dense and rises, moving water back toward the north pole. this describes which type of ocean current
a) surface
b) convenction
c) deep-water
d) el niño

Aresearcher is studying the science of attractiveness and asks volunteer test subjects to rank what trait they find most attractive in a person what type of variable is the dependent variable in this experiment

What is the approximate time of death of the body temperature is 29.4 degrees celsius

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 !