I believe it is C but not sure.
For air masses to form fronts, they must collide with each other. B.
Answer:
A. sexual reproduction must occur.
Explanation:
i may be wrong because we cant see the models but biased on what i know A seems to be the correct one.
i'm sorry i couldn't be more help.
<3
Answer:
competition
Explanation:
After an ecosystem has been destroyed because of certain catastrophe and all of the space that it occupied is totally cleared and open for overtaking, the primary succession comes in action. When the primary succession occurs, there's no competition, as pretty much everything has been destroyed from the previously existing ecosystem. The pioneers of the primary succession are organisms that do not require a lot to prosper, such as the mosses and lichens. As they start to cover the barren land, little by little they manage to change the composition of the rocks, thus resulting in the formation of the first soils. As that happens, the secondary succession comes on the horizon as now it has conditions for it, so the species from it overtake and replace the species form the primary succession.
Tapping of geothermal energy
to produce electricity is done on a larger scale compared to the tapping of
the geothermal gradient using a geothermal heat pump. Harnessing geothermal energy is also reliant on geological conditions such as in the area
of convection boundaries while geothermal
gradient can be harnessed virtually
anywhere on the earth surface.