# data[].attributes.body
The portulaca seeds were soft and easy to break open and easier to eat. The tripolis seeds are hard to break open and have pointy shells, there is also little protein in them.
Since there were no portulaca seeds, the birds were forced to eat the tripolis ones. The small beak birds had a harder time eating them since their beaks weren't made for hard outer shells and tough food.

# data[].attributes.body
Since the small beak birds died off the big beak birds reproduced and with other big beak birds.

# data[].attributes.body
The lack of seeds meant there wasn't a lot for the birds to eat. There were no portulaca seeds, the easiest to eat. The birds with smaller beaks had a hard time eating the tougher seeds and died off.

# data[].attributes.body
Since there was less rainfall the birds didn't have much to drink and with no water seeds can't grow.

# data[].attributes.body
The length of the birds beaks increased between the years of 1976 and 1978 because the smaller beak birds died because of the lack of seeds. The bigger beak birds repopulated.

# data[].attributes.body
The decrease in seeds caused there to be very little food to eat. There were 0 portulaca seeds per square meter and 5 tripolis seeds per square meter.

# data[].attributes.body
There was a lack of water, in 1977 only 20 mm of rainfall, which cause the birds to have very little to drink. The lack of water also caused a decrease in seeds.

# data[].attributes.body
Natural selection is what cause the small beak Finch population to decrease.