It is important to conserve non renewable sources of energy such as coal and oil because they are running out. If we burn all the oil to generate electricity then there will be none left for other useful things we use oil for.
An asteroid is not considered a moon because it is a rock that floats in space and sometimes gravity pulls it in a different direction.
Yes since for atoms to be of the same element , they must have the same number of protons inside their nucleus . This means that 1- they will all have the same nucleon number ( mass number ) and that 2-they will all have the same number of electrons in their outermost shell which determines the chemical properties of the atom.
The first image has a higher frequency because the wavelengths are shorter. This means that the disarmament between two crests (tops of waves) are closer together than the other waves. Hope this helps and mark brainliest if you can! Thanks!
I reckon the answer is orbital electrons but we learn it as delocalised electrons in the UK (they are able to move between shells freely and can carry a charge)