Hydrogen, helium, and nuclear fusion
Answer:
plate tectonics which collide every time a earthquake occurs
Explanation:
Ecological tipping points are the<span> points where environmental problems reach threshold level causing irreversible shifts in the behavior of natural systems. These are also called thresholds where the biodiversity changes.</span>
Answer:
When residents of several Southern California cities were asked to draw maps of their residential areas, middle- and upper-income individuals included more details and area, while lower-income individuals included fewer details and area.
I am pretty sure the answer is <span>d. all of the above.
Hope this helps</span>
