Unit 1 History of Life on Earth

The word 'biodiversity' means

• Variety of life

• Variety of earth

• One type of life

• Variety of water and ice

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Since the human, cat, whale and bat limbs look similar, scientists can infer or conclude that

• these animals have a common ancestor

• these animal have a common descendant

• there is no relationship between these animals

• these animals can all eat meat

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The physical remains of organisms, or an imprint of the physical remains, is known as

• fossils

• biodiversity

• natural selection

• Theory of Evolution

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When all the organisms of a species die, the species

• goes extinct

• hibernates

• comes back in 100 years

• thrive and populate the Earth

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A baby elephant will most likely resemble its parents, and not its great-great-great grandparents. This is because

• The parents are the closest living relatives

• The great-great-great grandparents are the closest living relatives

• The parents are ancient ancestors

• The great-great-great grandparents are a different species

Medical students in college study anatomy. Anatomy is the

• body structure and structural traits of an organism

• study of the thought process of an organism

• way genetic material is passed down from generation to generation

• explanation for way animals and plants go extinct

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When looking at a fossil record, scientists observe that fossils tend to disappear at a certain point. What is a likely explanation for this disappearance of fossils?

• An extinction event occurred

• Fossils no longer formed after a certain point even though the organisms were still living

• Organisms evolved into new organisms

• The organisms moved to a new area

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The La Brea tar pits are found in California. Tar is one of several ways that fossils can form. Which of the following are other examples of how fossils can form? (There are multiple answers)

• Organisms trapped in ice (Frozen)

• Organisms trapped in amber

• Organisms buried in rock

• Remains being destroyed by igneous (volcanic) rock

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This scientist observed variations in birds in the Galapagos Island in the 1800s.

• Charles Darwin

• Edward Darwin

• Charles Smith

• Darwin Jones

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The Galapagos sea lions number in the tens of thousands. However, there are some environmental pressures that could threaten the species. Which of the following is an environmental pressure? (defined by BrainPop)

• The sea lions learned to live near a fishery and eat the fish

• Humans have protected the waters

• Sharks roam the waters

• Humans do not harm the animals

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