What would most likely cause the future acceleration of the expansion of the universe?
O
O
O
O
radiation from the Sun
the existence of background radiation
the continued existence of dark energy
light shifts identified by the Doppler effect

Light shifts identified by the doppler effort

Evaporation: this is when warmth from the sun causes water from oceans, lakes, streams, ice and soils to rise into the air and turn into water vapour (gas). water vapour droplets join together to make clouds! condensation: this is when water vapour in the air cools down and turns back into liquid water.