With the concerns about global warming increasing, the production of gases and their effects on the atmosphere are being closely watched. when fossil fuel is burned in a car engine, increases in the atmosphere. a) oxygen b) hydrogen c) nitrogen d) carbon dioxide

What are the two causes of density in deep current waters? a. salinity (how much salt) of the water and high temperaturesb. salinity (how much salt) of the water and low temperatures c. oxygen content of the water and high temperatures. d. oxygen content of the water and low temperatures

During an experiment, readings for blood pressure in a persons body were found to be constant . however , when he measured by a different blood pressure cuff , the readings differed by 15 points for each reading. this difference indicates that the results are

Clownfish lay hundreds of eggs but only 10% to 15% survive into adulthood