The reference point for the coordinate (-2, 3) is a. (x, y) b. (0, 0) c. (2, -3) d. (3, -2)

Option A

Explanation:

The point of reference for any co-ordinate point is defined by the co-ordinate frame. In a co-ordinate frame there are six degrees of freedom – three Cartesian co-ordinates and three angular co-ordinates.  

Cartesian Co-ordinates – X, Y, Z  

Angular Co-ordinates – Rx, Ry, Rz

Angular co-ordinates basically define the rotation of a co-ordinate point about that axis.  

In the given question, the co-ordinate point is two dimensional. Hence, its reference point would be x,y

Hence, option A is correct

answer: after carbon dioxide enters the leaf through stomata it moves into the mesophyll cells where photosynthesis occurs and glucose is constructed. respiration occurs when glucose (sugar produced during photosynthesis) combines with oxygen to produce useable cellular energy.

explanation:

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