Natural Selection

What shows that species have changed over time

• core samples from the earth

• recorded data in history books

• fossil record

• rock record

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

A trait that allows an organism to survive its particular environment and reproduce

• factor

• adaptation

• selection

• variation

Tags

NGSS.MS-LS4-4

Which of the following is TRUE about the species that are living on earth today?

• All species living today have existed since the beginning

• Most species living today did not exist at the beginning

• Most species have existed from the beginning but some new

• There is no way of finding out

Tags

NGSS.MS-LS4-1

What is TRUE about environmental conditions on earth?

• Environmental conditions on earth have always been the same

• Same in the past, but they are changing now.

• Same in the past, but they are changing now.

• Earth changed in the past, and is changing now.

Tags

NGSS.MS-ESS2-2

If a new predator is introduced to an environment....

• the prey with unfavorable characteristics will move to a better environment

• the prey with favorable characteristics will survive and pass trait to future generations

• the prey with unfavorable characteristics will adapt and get the favorable characteristic

• the prey with unfavorable characteristics will survive for many generations and continue to reproduce

Tags

NGSS.MS-LS2-4

NGSS.MS-LS4-4

Traits that are passed to future generations are most often determined by

• random mutations that occur within a population

• non random mutations within a population

• how beneficial a trait is to the survival of the species

• how unfavorable a trait is to the species

Tags

NGSS.MS-LS3-1

NGSS.MS-LS4-4

What is true about Natural Selection

• It adds beneficial traits to the species

• It works on traits that already exist in the species

• It causes death to the whole population of species

• It creates perfection within the species

Tags

NGSS.MS-LS4-4

If a cold environment turned warm, what might occur within a species?

• they would all die even though they had variations

• the environmental change would cause mutations within the species

• The organisms would develop the trait it needs to survive

• Variations that already exist within the population could help them survive if they had a trait which allowed them to survive in warm weather

Tags

NGSS.MS-LS2-4

NGSS.MS-LS4-4

Which of the following is an example of natural selection?

• Birds migrating south for the winter

• Hamster with different colors of fur

• Butterflies come in many different varieties

• A purple insect is more likely to survive in a field of purple colored flowers than an orange insect

Tags

NGSS.MS-LS4-4

100 years ago in a creek the tiny frogs were dark green and light green in color. Over the years a light green algae accumulated in the creek. The population of light green frogs increased. Which statement best explains how this happened.

• The light green frogs developed a taste for the dark green frogs eggs

• The light green frogs were able to survive better in this environment, reproduced and passed on the trait

• The dark green frogs moved a different area of the creek

• none of the above could happen

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

NGSS.MS-LS2-4

NGSS.MS-LS4-4