Life Science Review

In 1911, a small population of 25 reindeer was introduced on Saint Paul Island. The graph shows the increase in the population of reindeer on the island between 1911 and 1940 with four lines (W, X, Y, and Z) that represent the estimated reindeer population by 1950. If the reindeer population overgrazed their food supply in 1940, which line would likely represent the estimated population of reindeer on the island by 1950?

• W

• X

• Y

• Z

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Which are sources of freshwater on Earth’s surface?

• A. atmosphere, rivers, swamps, soil, and living things

• B. aquifers, atmosphere, estuaries, rivers, and soil

• C. rivers, aquifers, swamps, soil, and oceans

• D. oceans, atmosphere, rivers, soil, and living things

Tags

NGSS.MS-ESS2-4

Which lakes’ water samples exceed only one of the EPA’s maximum permissible levels?

• A. Lakes P and Q

• B. Lakes Q and S

• C. Lakes Q and R

• D. Lakes P and S

Tags

NGSS.MS-PS1-2

What can be concluded correctly about the water in the stream?

• The presence of any living organisms indicates the water is safe to drink.

• The presence of many different types of invertebrates indicates the water is polluted.

• The presence of insects indicates that decomposition is taking place in the water.

• The presence of a variety of invertebrates indicates that the water is suitable for aquatic life.

What evidence supports that life on earth has continually evolved?

• Evidence from tree rings

• Evidence from rock layers, fossils, and ice cores

• Evidence gathered from melting glaciers

• Evidence that climate has changed over time.

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

Which would most likely increase the genetic variation in a population of an organism?

• An increase in diseases

• A decrease in diseases

• An increase in mutations

• A decrease in mutations

Tags

NGSS.MS-LS4-4

Which is the best evidence for evolution?

• New rock layers containing fossils ofd simple organisms

• New rock layers containing fossils unlike existing organisms

• Old rock layers containing fossils unike existing organisms

• Old rock layers containing fossils od complex organisms

Tags

NGSS.MS-LS4-1

Which best explains why mammals became dominant after the mass extinction of dinosaurs?

• They had traits that allowed them to adapt and change to the environment.

• They were bigger than dinosaurs.

• They were able to hibernate for a long time.

• They ate different foods than dinosaurs.

Tags

NGSS.MS-LS2-4

NGSS.MS-LS4-4

Which demonstrates how genetic variation may result from a change in an environment where an animal lives?

• A slamon swims faster in cold water.

• A snake increases body temperature when laying in the sun.

• A beetle stands out to predators because its color is different than its surroundings.

• An arctic fox changes it color over time because it migrates to a different climate.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS4-4

If a bat, an alligator, and a bird evolved from a common ancestor, what can be concluded?

• They have similar anatomical structures

• They live in the same part of the world

• They are in the same biological classification

• They are able to survive changes in their environments

Tags

NGSS.MS-LS4-2