# data[].attributes.body
The severely decreased amount of rainfall in 1977 proves that there was a huge drought. This huge drought in 1977 made the portulaca die off making a lot of birds die because that was the plant they ate so the rest had to use their long beaks and resorted to the tribulus plant.

# data[].attributes.body
Since there was a drought the portulaca seeds all died out so there was only tribulus seeds left to eat. The tribulus plant is hard and spiky so all the medium finches with shorter beaks died off because they could not eat. Then the medium finches with long enough beaks to eat survive then reproduce and the long beak trait gets passed on by natural selection.

# data[].attributes.body
Natural selection is when an organism adapts to the environment to survive better. Since the

# data[].attributes.body
There was a huge decrease in rainfall in 1977 causing a drought with only 20 inches of rain. In 1976 there was 130 inches of rain then in 1978 there was 540 inches of rain.

# data[].attributes.body
By the beginning of 1978 all portulaca seeds were gone. Meaning the tribulus seeds were the only ones left to eat.

# data[].attributes.body
The birds beak length average increased from 10.7 to 11.6 from 1976 to 1978.

# data[].attributes.body
Natural selection cause the increase if the beak of the medium finch.