Which are places on Earth where convection is operating on a grand scale, creatingconditions important to life on Earth?
A)in the mantle
B)in hot springs like Old Faithful
C)in the troposphere, such as a summer thunderstorm
D)at the thermal vents in the rift valleys
E)All of the above are good examples.

Question

Quizplus · Accepted Answer

All of the options listed involve convection operating on a grand scale and creating conditions that are important to life on Earth. In the mantle, convection drives plate tectonics and the recycling of minerals and nutrients. In hot springs like Old Faithful, convection heats and circulates water, creating unique ecosystems. In the troposphere, convection generates thunderstorms and other weather patterns, which help distribute heat and moisture around the globe. At thermal vents in rift valleys, convection circulates hot water, creating ecosystems that are entirely disconnected from the sun-driven food web on the Earth's surface. All of the choices listed involve convection operating on a grand scale, creating conditions that are important to life on Earth. Convection in the mantle drives plate tectonics and volcanic activity, which helps to recycle Earth's crust and create new land. Hot springs like Old Faithful are created by convection of water heated by geothermal energy, and provide habitats for unique microbial communities that can survive in extreme conditions. Thunderstorms in the troposphere involve convection of warm, moist air, and can bring much-needed rain to areas that depend on it for agriculture and other purposes. Finally, thermal vents in the rift valleys are the result of convection in the ocean floor, which provides nutrients and energy for unique deep-sea ecosystems that are not dependent on sunlight for photosynthesis.

Which Are Places on Earth Where Convection Is Operating on a Grand