The answer would be terms. The terms are being separated by addition as well as the subtraction signs. They are parts of the algebraic expression that contains numbers as well as operations and one or more symbols.Hope this would help.
B obviously .................
The light will enter they eye and it will be refracted as it
passes through the cornea. It will then pass the pupil which is controlled by
iris and will be further refracted by the lens. The cornea and lens together
will form a compound lens in order to project images which are inverted into the
retina.
Its B, because A is supposed to be a carbohydrate and D says lipids are inorganic but they are organic. Last C, Catalyst speeds up chemical reactions not lipids. So B is the right answer they make up part of the cell and cell membrane.