Convection currents form in atmosphere and freshwater lake. Convection currents occur when there is difference in temperature in both substances (eg. fluids). When there is a difference in temperature, the hot substance rises and the colder one sinks. The flow then will be form a hotter to the colder region.
I'm pretty sure the answer is "b" ;)
Answer:
Quartzite
Explanation:
It is a coarse-grained metamorphic rock. It's derived from sandstone.
Answer:
Most sea turtles migrate between foraging and nesting grounds, and seasonally to warmer waters. Often these migrations take them hundreds and even thousands of miles. With satellite telemetry, scientists can track the movements of sea turtles between areas and even across entire oceans.
Explanation:
