The sun formed several billion years ago from a cloud of gas and dust called a nebula. The cloud was mostly composed of hydrogen along with some helium and small amounts of other elements. The nebula collapsed as a result of gravity and possibly the shock wave from a supernova. Several discrete pockets formed that heated as they collapsed and pressure increased. The heat and pressure eventually ignited nuclear fusion, which released huge amounts of energy, thus forming this sun and several other stars. The fusion in the cores of these stars continues to this day. Some of the heavier material in the nebula clustered together to form planets, comets, and other such objects.
The main source of plastic is Crude Oil
Torch light is NOT a natural source of light. It is an Artificial Source of light generated by the electrical energy. In this the electrical energy is being transformed into Light energy.
The sun is the source of heat and light for plant-life.
yes
no
The main source of light is the sun
The main source of light is the sun
The main source for plants is the light
A light source that "fills in" or lightens shadow areas often created by the main light source without causing the main light source to "blow out" the highlights.
The sun.
it is sun
the sun
The main energy source for a reaction is typically provided by heat, light, or electricity.
Candles have been a primary light source historically due to their portability, ease of use, and accessibility of materials for their production. Additionally, candles provide a warm and natural-looking light that can create a cozy atmosphere in a variety of settings.
Key light
Key light
Key light