Explanation :
According to astronomers, the whole universe is started with a giant explosion called as Big Bang. Big Bang theory shows that the universe is extended from high density state.
There are some evidence for big bang as :
(1) There are some red shifts of different galaxies which means that the universe is expanding.
(2) Due to the expanding of universe, some of the new elements are created like hydrogen, deuterium etc.
(3) Microwaves are detected by orbiting detectors.
All this parameters shows that big bang theory was correct.
Both the size and the shape of the tree changes
By adding a vibration at the natural frequency of the medium-A
Atoms involved in (polar) covalent bonds do not share their electrons equally.
Answer:Done doing there job, in the winter they have a break
Explanation:
