he graph shows the range and average of beak depth (the measure from top to bottom of the beak) for seed-eating finches living on an island in the Galapagos between 1976 and 1978.
Information
Short description, A graph.,Long description,
The graph is titled Average beak size.
In 1976, the smallest beak size was about 5.5 centimeters, and a small number of individuals had a beak of this size. Beak size increased, as did the number of individuals, until it peaked at about 9.5 centimeters. The most individuals had a beak size of about 9.5 centimeters. As beak size continued to increase, the number of individuals decreased. The largest beak size was about 13 centimeters, and a small number of individuals had a beak of this size.
In 1978, the smallest beak size was about 7 centimeters, and a small number of individuals had a beak of this size. Beak size increased, as did the number of individuals, until it peaked at about 12 centimeters. The most individuals had a beak size of about 12 centimeters. As beak size continued to increase, the number of individuals decreased. The largest beak size was about 14.5 centimeters, and a small number of individuals had a beak of this size.
Question
A drought struck the island during these years. Plants that produced small, soft seeds declined dramatically while plants that produced large, hard seeds increased.
What are the ,begin emphasis,three,end emphasis, ,begin emphasis,best,end emphasis, explanations for the difference in beak depth between the two years?
Answer options with 5 options
A.
Beaks grew deeper by cracking bigger, harder seeds.
B.
Deeper beaks allowed finches to survive the drought.
C.
Large, hard seeds require a deeper beak to crack open.
D.
Genes for beak depth were passed on to offspring from surviving finches.
E.
Nature gave the finches deeper beaks during the drought so they could survive.
The three best explanations for the difference in beak depth between the two years are:
A. Beaks grew deeper by cracking bigger, harder seeds.
C. Large, hard seeds require a deeper beak to crack open.
D. Genes for beak depth were passed on to offspring from surviving finches.
Which ,begin emphasis,best,end emphasis, explains the role of enzymes in a living cell?
Answer options with 4 options
A.
Some enzymes add heat to speed up chemical reactions.
B.
Each enzyme speeds up a specific kind of chemical reaction.
C.
Enzymes are able to speed up any kind of chemical reaction.
D.
Most enzymes remove heat to slow and control chemical reactions.
The best explanation for the role of enzymes in a living cell is:
B. Each enzyme speeds up a specific kind of chemical reaction.
The three best explanations for the difference in beak depth between the two years are:
A. Beaks grew deeper by cracking bigger, harder seeds.
C. Large, hard seeds require a deeper beak to crack open.
D. Genes for beak depth were passed on to offspring from surviving finches.
To determine the three best explanations for the difference in beak depth between the two years, we need to analyze the information provided and choose the most supported options.
First, based on the information that plants producing small, soft seeds declined dramatically while plants producing large, hard seeds increased, we can infer that the availability of food sources changed.
Given this change in food availability, we can consider the following explanations:
1. Option C: Large, hard seeds require a deeper beak to crack open. This option is supported by the fact that the plants producing large, hard seeds increased during the drought. Finches with deeper beaks would have an advantage in cracking open and accessing these larger seeds.
2. Option B: Deeper beaks allowed finches to survive the drought. This option is supported by the fact that the beak size increased during the drought period. Finches with deeper beaks would have been better equipped to handle the change in food availability and therefore had a higher chance of survival.
3. Option D: Genes for beak depth were passed on to offspring from surviving finches. This option is supported by the fact that beak size increased until it peaked at a certain size. Genetic variations for beak depth would have existed in the finch population, and those individuals with deeper beaks would have had higher chances of survival and passing on their genes.
Therefore, the three best explanations for the difference in beak depth between the two years are options C, B, and D:
C. Large, hard seeds require a deeper beak to crack open.
B. Deeper beaks allowed finches to survive the drought.
D. Genes for beak depth were passed on to offspring from surviving finches.