How did the drought lead to an increase in beak size in the medium ground finch population? The Grants reasoned that prior to the drought, the finch population fed primarily on small seeds that they could open easily. Although larger, tougher seeds were available, they were not typically eaten, not even by finches with larger beaks. During the drought, only a limited number of small seeds were produced, leaving mostly larger, tougher seeds available for food. Finches that were unable to eat the larger seeds died of starvation.
Based on their observations and the data they collected, the Grants concluded that evolution by natural selection had occurred in the medium ground finch population. The increase in the average beak size of the offspring was a direct result of the change in the food supply during the drought.
In order to have reached this conclusion, the Grants must have either assumed or proven that several other facts about the finch population were true. Which statements represent information that must be true in order for the Grants conclusion to be correct?
Select the three statements that must be true.
a. An individual finch's beak size can change depending on the size of the seeds it eats.
b. Beak size varies among the birds in the finch population under study.
c. Birds that could eat larger, tougher seeds survived and reproduced during the drought.
d. Beak size is an inherited trait in the finch population under study.
e. The drought caused a mutation that led to larger beak sizes in the finch population.

c. Birds that could eat larger, tougher seeds survived and reproduced during the drought.

d. Beak size is an inherited trait in the finch population under study.

e. The drought caused a mutation that led to larger beak sizes in the finch population.

Explanation:

As per the details provided in the question about the beak mutation of Finch, the three pints can used to assume why they came to such conclusion.

It was clear that the population Finch they were studying had long beaks because short beak population could not survive. It was an inherited trait because the surviving population mated to reproduce a population that had mutated beaks. And the obvious fact that the mutation was caused by the drought due to lack of smaller seeds to feed upon.

uses : -

1.aneroid barometers primarily measure whether pressure is rising or falling.

2.aneroid barometers are often used for reading pressure in homes and recreational boats.  

3.other uses may include barographs in meteorology and altimeters in modern aircraft.  

4.this type of barometer can announce whether a high or low pressure system is coming or whether it is becoming more intense.  

5.there are different types of aneroid barometers, such as the altimeter, which measures altitude, or distance above sea level.  

6.another example is a barograph, which is a modified aneroid barometer that provides constant readings of atmospheric pressure on graph paper.  

7.when used in this capacity, the aneroid barometer can store a week's worth of data.

android diameter a device for measuring atmospheric pressure , often specially calibrated for use as an altimeter ,consisting of a box or chamber partially exhaused of air, having an elastic top and a pointer to indicate the degree of compression of the top caused by the external air

refer to the attachment for the characteristics : -

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