Dunes form in any place where there is a lot of sand and prevailing winds, such as in a desert. However, Florida does not have any deserts. Which statement best describes
most of Florida's dunes?
A.
B.
C.
D.
dunes formed by sediment from mountains
dunes formed by sediment carried by rivers
coastal dunes behind rocky cliffs
coastal dunes behind sandy beaches

What is the enthalpy of combustion (per mole) of c4h10 (g)? –2,657.5 kj/mol –5315.0 kj/mol –509.7 kj/mol –254.8 kj/mol

Air pressure is measured in pascals. for a professional american football game, the ball should be inflated to about 90,000 pascals. scientists studied the effects of air temperature on the pressure inside american footballs by taking these steps: 1. prepare 100 footballs. 2. measure each football's air pressure. 3. divide footballs into 10 groups. 4. place the groups in different lockers cooled to different air temperatures. 5. after 12 hours, remove the footballs from lockers. 6. measure each football's pressure again. 7. compare the new pressures to the starting pressures. what two terms best describe the variable "air pressure inside the football" in this experiment? independent, qualitative independent, quantitative dependent, qualitative dependent, quantitative

The compound formed from 2 atoms of hydrogen and one atom of oxygen is