Typical united states weather patterns show the continental polar air mass moving south toward the gulf of mexico. why does this air mass movement happen? a) colder air masses move from north to south. b) continental air masses always move in the direct of the nearest body of water. c) the polar air mass moves south to replace the rising maritime tropical air mass. d) the continental polar air mass is blocked in by maritime air masses on all sides.

Apopulation has 1000 individuals. over a period of 1 year, 500 newindividuals are born. which equation shows how to calculate the birthrate ofthis population? a. 500 - 1000 = 0.5b. 1000 x 0.5 = 500c. 1000 - 500 = 2d. 1000 + 500 = 1500

What feature of cell theory is best demonstrated in the image

In 2015, about ten percent of total u.s. energy consumption was from renewable energy sources. renewable energy plays an important role in reducing greenhouse gas emissions. when renewable energy sources are used, the demand for fossil fuels is reduced. sanjay and his family want to cut back on their use of non-renewable resources at home. they are thinking of an alternate way to heat their home without adding more greenhouse gases or pollutants to the environment. which renewable resource would not fit into their plan? a) solar power b) burning wood c) constructing a wind turbine eliminate d) generating hydroelectric power