Background: A period of very low rainfall occurred while the Grants were on the islands. The drought resulted in fewer seeds for the finches to eat. Birds with smaller beaks could eat only the smaller seeds. Birds with bigger beaks were better off. They could eat seeds of all sizes. Therefore, there was more food available to them. Many of the small-beaked birds died in the drought. More of the big-beaked birds survived and reproduced. Within just a couple of years, the average beak size in the finches increased. This was clearly evolution by natural selection.

Situation: Two bird islands in the Atlantic Ocean had very different climate changes during the last 5 years. Bone island experienced drought, while Finch island experienced flooding.

Question: Which island had more big-beaked birds reproduce?
Answer: Bone

Situation: Two bird islands in the Atlantic Ocean had very different climate changes during the last 5 years. Bone island experienced drought, while Finch island experienced flooding.

Question: Which island had fewer big-beaked birds reproduce?
Answer: Finch

Situation: Two bird islands in the Atlantic Ocean had very different climate changes during the last 5 years. Bone island experienced drought, while Finch island experienced flooding.

Question: Which island displayed clear evidence of natural selection?
Answer: Bone

Situation: Two bird islands in the Atlantic Ocean had very different climate changes during the last 5 years. Bone island experienced drought, while Finch island experienced flooding.

Question: Which island didn't display clear evidence of natural selection?
Answer: Finch

Situation: Two bird islands in the Atlantic Ocean had very different climate changes during the last 5 years. Bone island experienced drought, while Finch island experienced flooding.

Question: Which island had more small-beaked birds die?
Answer: Bone

Situation: Two bird islands in the Atlantic Ocean had very different climate changes during the last 5 years. Bone island experienced drought, while Finch island experienced flooding.

Question: Which island had fewer small-beaked birds die?
Answer: Finch

Situation: Two bird islands in the Atlantic Ocean had very different climate changes during the last 5 years. Bone island experienced drought, while Finch island experienced flooding.

Question: Which island had fewer seeds for the finches as a result of drought?
Answer: Bone

Situation: Two bird islands in the Atlantic Ocean had very different climate changes during the last 5 years. Bone island experienced drought, while Finch island experienced flooding.

Question: Which island had more seeds for the finches?
Answer: Finch

Situation: Two bird islands in the Atlantic Ocean had very different climate changes during the last 5 years. Bone island experienced drought, while Finch island experienced flooding.

Question: Which island had more of the big-beaked birds survive?
Answer: Bone

Situation: Two bird islands in the Atlantic Ocean had very different climate changes during the last 5 years. Bone island experienced drought, while Finch island experienced flooding.

Question: Which island had none of the big-beaked birds die?
Answer: Finch

Situation: Two ancient continents both had a great bird population. At some point in time, the continent of MU experienced a great drought that lasted for several years. The other continent, Lemuria, was unaffected by the drought.

Question: Which continent had fewer seeds for the birds?
Answer: MU

Situation: Two ancient continents both had a great bird population. At some point in time, the continent of MU experienced a great drought that lasted for several years. The other continent, Lemuria, was unaffected by the drought.

Question: Which continent had more seeds for the birds?
Answer: Lemuria

Situation: Two ancient continents both had a great bird population. At some point in time, the continent of MU experienced a great drought that lasted for several years. The other continent, Lemuria, was unaffected by the drought.

Question: Which continent had more birds with bigger beaks that were better off?
Answer: Lemuria

Situation: Two ancient continents both had a great bird population. At some point in time, the continent of MU experienced a great drought that lasted for several years. The other continent, Lemuria, was unaffected by the drought.

Question: Which continent had fewer birds with bigger beaks that were better off?
Answer: MU

Situation: Two ancient continents both had a great bird population. At some point in time, the continent of MU experienced a great drought that lasted for several years. The other continent, Lemuria, was unaffected by the drought.

Question: Which continent had more food available to the birds?
Answer: Lemuria

Situation: Two ancient continents both had a great bird population. At some point in time, the continent of MU experienced a great drought that lasted for several years. The other continent, Lemuria, was unaffected by the drought.

Question: Which continent had less food available to the birds?
Answer: MU

Situation: Two ancient continents both had a great bird population. At some point in time, the continent of MU experienced a great drought that lasted for several years. The other continent, Lemuria, was unaffected by the drought.

Question: Which continent had more small-beaked birds die in the drought?
Answer: MU

Situation: Two ancient continents both had a great bird population. At some point in time, the continent of MU experienced a great drought that lasted for several years. The other continent, Lemuria, was unaffected by the drought.

Question: Which continent had fewer small-beaked birds die in the drought?
Answer: Lemuria

Situation: Two ancient continents both had a great bird population on them. At some point in time, the continent of Mu experienced a great drought that lasted for several years. The other continent, Lemuria, was unaffected by the drought.

Question: Which continent had fewer birds with bigger beaks that survived?
Answer: Mu

Situation: Two ancient continents both had a great bird population on them. At some point in time, the continent of Mu experienced a great drought that lasted for several years. The other continent, Lemuria, was unaffected by the drought.

Question: Which continent had more birds with bigger beaks that survived?
Answer: Lemuria

Situation: Two bird islands experienced different levels of rainfall. West island experienced a lengthy drought that lasted several years. Many birds were affected by this drought. East island had several normal years as far as rainfall was concerned.

Question: Which island had fewer seeds for the finches to eat?
Answer: West

Situation: Two bird islands experienced different levels of rainfall. West island experienced a lengthy drought that lasted several years. Many birds were affected by this drought. East island had several normal years as far as rainfall was concerned.

Question: Which island had more seeds for the finches to eat?
Answer: East

Situation: Two bird islands experienced different levels of rainfall. West island experienced a lengthy drought that lasted several years. Many birds were affected by this drought. East island had several normal years as far as rainfall was concerned.

Question: Which island had more birds with bigger beaks that were better off?
Answer: West

Situation: Two bird islands experienced different levels of rainfall. West island experienced a lengthy drought that lasted several years. Many birds were affected by this drought. East island had several normal years as far as rainfall was concerned.

Question: Which island had fewer birds with bigger beaks that were better off?
Answer: East

Situation: Two bird islands experienced different levels of rainfall. West island experienced a lengthy drought that lasted several years. Many birds were affected by this drought. East island had several normal years as far as rainfall was concerned.

Question: Which island had fewer birds with smaller beaks that were better off?
Answer: West

Situation: Two bird islands experienced different levels of rainfall. West island experienced a lengthy drought that lasted several years. Many birds were affected by this drought. East island had several normal years as far as rainfall was concerned.

Question: Which island had more birds with smaller beaks that were better off?
Answer: East

Situation: Two bird islands experienced different levels of rainfall. West island experienced a lengthy drought that lasted several years. Many birds were affected by this drought. East island had several normal years as far as rainfall was concerned.

Question: Which island had more birds with smaller beaks die in the drought?
Answer: West

Situation: Two bird islands experienced different levels of rainfall. West island experienced a lengthy drought that lasted several years. Many birds were affected by this drought. East island had several normal years as far as rainfall was concerned.

Question: Which island had fewer birds with smaller beaks die in the drought?
Answer: East

Situation: Two bird islands experienced different levels of rainfall. West island experienced a lengthy drought that lasted several years. Many birds were affected by this drought. East island had several normal years as far as rainfall was concerned.

Question: Which island had fewer big-beaked birds survive and reproduce?
Answer: East

Situation: Two bird islands experienced different levels of rainfall. West island experienced a lengthy drought that lasted several years. Many birds were affected by this drought. East island had several normal years as far as rainfall was concerned.

Question: Which island had more big-beaked birds survive and reproduce?
Answer: West