MEDIUM
Lower Secondary Stage 9
IMPORTANT
Earn 100

Lemmings are furry rodents naturally found in the Arctic tundra. In 1800 a population of lemmings was taken from the Arctic to an area with a warmer climate. The lemmings were left to live and reproduce in the new area. The population of lemmings was revisited 200 years later. Some information about the lemmings is shown in the table:
Year Average fur length of lemming(mm)
1800 12
2000 8
Explain how Darwin's theory of natural selection can explain this change.

Important Questions on Variation and Inheritance

MEDIUM
Lower Secondary Stage 9
IMPORTANT
A farmer wants buffalo produce a high milk yield. Describe how the farmer could use selective breeding to produce such animals.