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.

[EX Q]: Question: If a substance is tested and has a high pH of 12 we could say that the substance is 
 Answer: basic
[EX A]: For bases we can state the folllowing: The higher the pH of a substance, the more basic it is.

[EX Q]: Question: If the ocean basin were to decrease, the sea level would 
 Answer: rise
[EX A]: Sea level rises if an increase in seafloor spreading rate buoys up the ocean crust, causing the ocean basin to become smaller.

[EX 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
[EX A]:
Low food supply or a lack of space can lower birth rates, increase death rates, or lead to emigration.