Which of these events occurred during the mesozoic era?

early humans began to make tools, harvest plants, and make cave paintings.

cyanobacteria filled the water and air with oxygen.

pangaea, the super continent, was formed.

pangaea began to break apart into many continents separated by shallow seas.

Pangaea started to break apart.

colors do exist. the color of the sky is actually violet; humans percieve the color of the sky as blue.

the circled areas are referred to   as sunspots.   the sunspots are cooler than the   surrounding area.

sunspots are temporary phenomena on the photosphere of the sun that appear visibly as dark spots compared to surrounding regions. they correspond to concentrations of magnetic field flux that inhibit convection and result in reduced surface temperature compared to the surrounding photosphere.