Where Do Species Come From?

Explain the concept of speciation.

• The formation of new and distinct species in the course of evolution.

• The process by which organisms adapt to their environment.

• The study of the distribution of species and ecosystems in geographic space and through geological time.

• The classification of organisms into ordered groups based on their similarities and differences.

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The Galápagos Islands are remote islands off the coast of ________.

• Ecuador

• Peru

• Chile

• Colombia

What often causes populations to become separated, leading to speciation?

• Geographical barriers

• Climate change

• Human activities

• Predation

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The significance of the curved shell in Galápagos tortoises is (a)  

• It helps them swim better.
• It provides better protection from
• It allows them to reach higher vege
• It helps them dig burrows.

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Some brown bears (a)   when the new forests grew in the Arctic.

• They migrated to other regions
• They adapted to the new environment
• They hibernated for longer periods
• They became extinct

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What is the main difference between the environment of the Arctic and the environment farther south?

• The Arctic is colder and has more ice.

• The Arctic is warmer and has more vegetation.

• The Arctic has more deserts.

• The Arctic has more mountains.

Match the following reasons with their corresponding challenges faced by polar bears:

• Scarcity of prey

• Due to human interference

• Harsh environmental conditions

• Because of the harsh climate

• Impact of human activities

• Due to lack of food

• Slow adaptation over time

• Because of their slow evolutionary process

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Where did the small ducks from North America end up millions of years ago?

• Europe

• Hawaii

• Africa

• Australia

What is one reason the island ducks lived longer and had more chances to reproduce?

• They had more food resources.

• They faced fewer predators.

• They had better nesting sites.

• They were genetically superior.

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Match the following birds with their respective regions.

• Australia

• Ostrich

• Hawaii

• Kiwi

• New Zealand

• Nene

• Africa

• Emu