Section B: Structured Questions (20 Marks) 1. Give a reason for each of the following safety rules in the science laboratory.
(a) Do not eat or drink in the science laboratory.
(b) Do not point the mouth of the test tube towards a person when you are heating a corrosive
liquid.
c) Read all the labels carefully before using any chemical.

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explanation:

correct answer: biotic and abiotic limitations

carrying capacity is defined as the total number of an organism who can be supported in a given area within the natural resources limit and without harming or degrading the natural, economic or the cultural environment present for the future generations.

carrying capacity is determined by the limiting factors, which are known to affect the natural resources available. it may include water, nutrients, minerals, space, light etc.

explanation:

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d) center of the mid-ocean ridge

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the fossil record provides evidence of a common ancestor to many species.