Answer:
In representative democracy, citizens elect representatives, who in turn represents their interests in the elected government. The vast majority of democracies in the world are representative.
In a direct democracy, citizens have more direct ways to participe in the government, and in the making of the laws of the country or region. There are very few places in the world where direct democracy is the norm, Switzerland being perhpas the most noteworthy example.
A human instinct because our instinct is survival
Nuclear fusion generates the energy that is released by stars.
In the great majority of stars, it's the fusion of hydrogen nuclei
to form helium nuclei plus energy. In very old stars, the nuclei
of heavier elements are fused, forming even heavier ones.
Sunlight is the requirement of every single natural process on Earth.
There's three types of plate boundaries:
- Collision plate boundaries (where two or more plates of the same density collide )
- Adjacent plate boundaries (where two or more plates slide against each other)
- Subduction plate boundaries (where one or more plates with lesser density are subducting below the the plate that has bigger density).