Oxygen - element
Water - compound
Ocean - liquid solutions
Air - gaseous solution
Cloud - colloid
In order to understand the meaning of the word "indigenous" , we have to break the word as
Indi + gen + ous
Here "Gen" means birth (like genesis: generation of something)
"Ous" means bearing some properties related to something
like marvelous : having property known as marvel.
Thus indigenous means having property of place where birth was taken
Thus it is originating in a particular region
The word root "gen" means "birth," and the suffix "-ous" means "having the quality of something."

The nucleus of an atom of the element is positively charged and atom has a hollow space inside it.
Explanation:
This experiment was conducted by Rutherford in this experiment. He placed a gold foil and surround it with a screen.
And He exposed gold foil in alpha particles rays in which he noticed that most rays passed through atom which conclude that atom has a large space, some rays get deflected and some reverse their path this show that the positive charge of nucleus of an atom.
Answer:
Accelerate, Have Constant velocity, Velocity, and First
Explanation:
Got it right on edge. have a wonderful day!!!
CuSO4. 5H2O(s) → CuSO4(s) + 5 H2O(g)
Here, when we heat copper (II) sulphate pentahydrate, it will turn white in colour from blue colour.