CER Padlet by EMMA CURRY https://padlet.com/emmacurry24/17g897w3xi08 Made for CER en-us 2020-02-04 18:25:29 UTC 2026-02-09 04:27:24 UTC hello@padlet.com https://padlet.net/icons/png/1f4c4.png Claim emmacurry24 https://padlet.com/emmacurry24/17g897w3xi08/wish/440507172 When microevolution caused the finch beak to increase in size because of natural selection from 1976-1978]]> 2020-02-04 18:55:43 UTC https://padlet.com/emmacurry24/17g897w3xi08/wish/440507172 Evidence emmacurry24 https://padlet.com/emmacurry24/17g897w3xi08/wish/440510095 During 1976 - 1978 there was an extreme lack of portulaca seeds. 
1976  there were 10 seeds per spare meter
1977 there were 0 seeds per spare meter
1978 there were 0 seeds per square meter

]]> 2020-02-04 18:59:22 UTC https://padlet.com/emmacurry24/17g897w3xi08/wish/440510095 Evidence emmacurry24 https://padlet.com/emmacurry24/17g897w3xi08/wish/440510376 The change in beak size from 1976 and 1978. 
1976 
-Depth 9.6mm
-Length 10.7mm 
1978
-Depth 10.5mm
-Length 11.6mm 

]]> 2020-02-04 18:59:44 UTC https://padlet.com/emmacurry24/17g897w3xi08/wish/440510376 Evidence emmacurry24 https://padlet.com/emmacurry24/17g897w3xi08/wish/442312247 There was also an Extreme  drought throughout the years of 1976-1978
1976 there was 130mm of rain.
1977 there was only 20 mm of rain (this is the drought)
1978 there was 540 mm of rain.


]]> 2020-02-07 18:14:03 UTC https://padlet.com/emmacurry24/17g897w3xi08/wish/442312247 Reasoning emmacurry24 https://padlet.com/emmacurry24/17g897w3xi08/wish/442345903 During the two year span of 1976-1978 the Galapagos Finches experienced a big change in both their offspring and their environment. We can see that through the drought, natural selection changed the finches beaks to help them survive. So when the drought happened the plants started to die because of lack of rain. That means the finches seeds that they eat (the portulaca seeds) died and cause the population of finches in the galapagos islands to go down drastically. This is when natural selection starts to take place. The finches that had the smaller beaks and could really only eat the portulaca seeds, didn't have enough food so died of starvation. But the ones that had bigger beaks were able to survive and mate with the other bigger beaked finches. This cause the finches offspring to be born with beaks that would help them survive better in the wild and live long enough to give off offspring to the next generation. ]]> 2020-02-07 19:07:15 UTC https://padlet.com/emmacurry24/17g897w3xi08/wish/442345903