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.

Question: An increase in food will likely lead to _____ lifespans. 
 Answer: longer
New farm machines were invented. They increased the amount of food that could be produced. With more food, people were healthier and could live longer.

Question: Gerald laid down many rock layers. The layers on the bottom level were likely laid 
 Answer: first
Lower rock layers were laid down earlier, so they are assumed to contain older fossils.

Question: When we have a very calm day what will happen to the waves? 
 Answer: decrease

The faster, longer, and farther the wind blows, the bigger the waves are.