Global climate change has caused ocean temperatures to increase. which evidence supports this claim?
arctic sea ice now covers a larger portion of the northern waters.
currents that carry plankton are much more stable than in the past.
hurricanes are less powerful than they were 20 years ago.
sea level has risen more than 300 centimeters since 1880 measurements.

Which one of the following research methods can show cause and effect

Because air contracts as it cools, the air pressure inside a freezer is typically lower than on the outside. why do ice cubes inside a freezer tend to shrink over time? a. the ice dissolves oxygen from the air, forming a denser crystalline matrix.b. the ice reacts chemically with carbon dioxide in the air, forming gaseous carbon compounds.c. the ice melts, and then the liquid freezes as ice crystals on the bottom of the freezer.d. the ice sublimes, and then the water vapor deposits as ice crystals on the sides of the freezer.

An important dimensionless parameter concerned with very high-speed flow is the mach number, defined as v/c, where v is the speed of the object such as an airplane or projectile, and c is the speed of sound in the fluid surrounding the object. for a projectile traveling at 1170 mph through air at 50 ˚f and standard atmospheric pressure, what is the value of the mach number?