In this task, you are given a question and answer for that. The answer will fill in the blank or will complete the unfinished question. Your task is to provide an explanation based on the given question or fill-in-the-blank statement, and answer.

Q: Question: Tasha is studying birth rates in various countries. She looks at two countries. In South Africa, the food supply is currently higher than in Australia. Because of this, the birth rate in South Africa, compared to Australia, will be 
 Answer: higher

A: Low food supply or a lack of space can lower birth rates, increase death rates, or lead to emigration.
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Q: Question: John was combining chemicals in his lab one day. If he were to increase the temperature in his lab, what would happen to the rate of chemical reactions in his experiments? 
 Answer: increase

A: Chemical weathering increases as: Temperature increases: Chemical reactions proceed more rapidly at higher temperatures.
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Q: Question: Bryan was tasked with categorizing various fossils that the archeology team dug up. He knew they found some in rock layers near the surface and others in layers much farther below the ground. Which should he categorize as the younger ones? 
 Answer: near surface fossils

A:
The main law is the law of superposition. This law states that deeper rock layers are older than layers closer to the surface.
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