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(a) In order to add or subtract any fractions, they must first have a common denominator. For this example, I will take this to be 30. Looking at 3/10: in order to change the denomintor to 30, we must mul...

A bond formed between a metal atom and a non-metal atom in which electrons are transferred from the metal atom to the non-metal atom, forming ions. If an atom loses an electron, it becomes positively char...

Positive. The neutrons found in the nucleus have a neutral charge, however the protons are positively charged. Therefore the overall charge is positive.

• chloroplasts which are able to trap light so it can be used to generate energy through photosynthesis - cell wall which provides the plant cell with structure

The cell has an outer membrane known as the cell membrane, which envelops the cytoplasm. The cell also contains mitochondria which work to provide the cell with energy (in the form of ATP) and a nucleus, ...