Perhaps the composite cone volcanoes
The Bronze Era was a time period in history where basic tools were developed and this epoch has been chosen as a turning point during pre-history where advancement and progression were key for the modern human to come.
Soil erosion and the intensive use of fertilizers and pesticides might also present health risks to urban populations, as well as cause environmental harm. Furthermore, both large- and small-scale food production is associated with deforestation, draining of water reservoirs, etc.
In chemistry and physics, the atomic theory explains how our understanding of the atom has changed over time. Atoms were once thought to be the smallest pieces of matter. However, it is now known that atoms are made up of protons, neutrons, and electrons. These subatomic particles are made up of quarks. The first idea of the atom came from the Greek philosopher Democritus. A lot of the ideas in the modern theory came from John Dalton, a British chemist and physicist.
The theory applies to solids, liquids and gases, but it does not apply in quite the same way to plasmas or neutron stars.
