TCI Lesson 2 Adaptations

The fossil record describes _____________ as documented by the fossils collected so far.

• the history of life on Earth

• how most species went extinct

• the nature of rock formations

• the amounts of species that have existed on Earth

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NGSS.MS-LS4-1

Why doesn't the fossil record include every species that has lived on Earth?

• Very few living things end up as fossils

• Scientists are unable to determine what species some fossils are

• Most fossils on Earth have not yet been found.

• The record has not been updated in many years.

Tags

NGSS.MS-LS4-1

The earliest fossils show that Earth's earliest life forms were organisms with

• complex cells

• a sing, simple cell

• a nucleus

• no cells

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Which of the following best describes what the first multicellular animals were like?

• hard-shelled

• single-celled

• soft-bodied

• "simple" organisms

What is adaptive radiation?

• A strategy to preserve fossils

• The appearance of complex cells

• The acclimation of species to their environments

• A sudden, rapid increase in biodiversity

Tags

NGSS.MS-LS4-4

What factor most likely caused the Cambrian Explosion?

• Increasing oxygent levels in the atmosphere

• Changes in oceans

• Developments in living organisms

• All of the above

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Scientists conclude that a fossil species is extinct when

• it vanishes from the rock strata

• it cannot be studied further

• the first fossil of a species is discovered

• too many have been found

Tags

NGSS.MS-LS4-1

How many mass extinctions do scientists see evidence for in Earth's history?

• 1

• 3

• 5

• 10

Tags

NGSS.MS-LS4-1

What pattern can be observed from mass extinctions?

• Mass extinctions primarily happen among species of plant life.

• Mass extinctions are followed up by adaptive radiations, increasing Earth's biodiversity.

• Mass extinctions lower the Earth's totalbiodiversity for a significant amount of time

• Mass extinctions are always caused by factors that do not originate on Earth

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Which of these was NOT a cause for a mass extinction on Earth?

• The evolution of a predatory species that killed countless organisms.

• An extreme ice age that destroyed marine habitats.

• Huge volcanic eruptions that led to extreme global warming.

• A great meteor impact that blocked the sun for a year or more.

Tags

NGSS.MS-LS4-1