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Which piece of evidence could be used to show that woolly mammoths and modern elephants are directly related to each other and share a common ancestor?

• They both eat only plants.

• They share similar anatomical features, such as long trunks.

• They both produce one large offspring at a time, usually in the spring.

• Their social behavior includes traveling in herds for warmth and protection.

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NGSS.MS-LS4-2

A scientist studies a fossil record as shown.He concludes that Species A is older than Species B. Which of these statements supports his conclusion?

• Species in this record are less complex than in other fossil records.

• Fossils found with Species A are less complete than those found with Species B.

• This fossil record was discovered many years ago before the invention of radioactive dating.

• Sediments in this record are made of layers where older sediment is deposited in lower layers.

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NGSS.MS-LS4-1

Scientists have found several remains of woolly mammoths in the Arctic tundra. Scientists want to recreate the fossilization event in order to understand how the animals died. Which of these experiments would most closely model the process by which a woolly mammoth would have been fossilized?

• freezing a specimen in the freezer and then embedding it in ice

• submerging a specimen in epoxy glue and then hardening the glue

• placing a specimen in wet cement and then removing it to leave an imprint

• covering a specimen in sand and then exposing it to tremendous pressure

When scientists studied geological columns from different parts of the world, they discovered something interesting: the fossils of dinosaurs and many groups of reptiles and marine invertebrates disappeared at the top of the Mesozoic section. What is the most likely explanation of this evidence?

• The organisms evolved very quickly into new organisms.

• Organisms likely migrated to different parts of the world.

• An extinction event caused many of the organisms to die off.

• The areas no longer had the conditions needed for fossilization.

Tags

NGSS.MS-ESS1-4

NGSS.MS-LS4-1

The graph shows how biodiversity of marine organisms has changed over the past 500 million years.

What is the overall trend that can be seen in the data?

• The number of species has decreased over time.

• The number of species has increased over time.

• The number of species has remained the same over time.

• The number of species has shown great fluctuations over time.

Tags

NGSS.MS-LS4-1

Based on the evidence, approximately how long ago did the Tropites live?

• 145 million years ago

• 180 million years ago

• 240 million years ago

• 541 million years ago

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NGSS.MS-ESS1-4

NGSS.MS-LS4-1

Based on the image, which statement identifies a characteristic that would cause scientists to think the two organisms might be related?

• They are about the same size.

• They eat the same kind of food.

• They live in the same types of habitats.

• They have very similar body structures.

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NGSS.MS-LS4-2

What conclusions can be drawn from the evidence presented here?

• Bats and mice share a common ancestor.

• The adaptation of wings suggests that bats are more closely related to birds than to mice.

• Similarities in embryonic development indicate that bats and mice are actually the same species.

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NGSS.MS-LS4-2

NGSS.MS-LS4-3

The older layers of rock are on the _________ of the canyon.

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NGSS.MS-ESS1-4