AnswersFL-2002070-MJ Comprehensive Science 2Unit Test

Unit Test — Unit test Answers

0 verified answers
1
Free Preview

The image shows sedimentary rock layers.

Question illustration
A
1
B
2
C
3
D
4
2
Free Preview

Consider how to complete this timeline to show the order in which different evolutionary ideas were developed.

Question illustration
A
Z, X, Y
B
Y, Z, W
C
W, X, Z
D
Y, Z, X
3

What determines the length of a geologic time period?

A
fossil record
B
material density
C
meteors and rocks
D
radioactive materials
4

During natural selection, which organisms are most likely to survive as the environment changes?

A
ones that can best adapt to and survive in the changed environment
B
ones that can adapt to the original environment
C
ones that are randomly selected for survival independent of the environment
D
ones that are randomly selected for survival in the changed environment
5

What did Darwin think about Earth and life while he was forming his theory of evolution?

A
Earth changes slowly over time, so populations might also.
B
Earth might cause rapid changes in the traits of individuals.
C
Earth cannot sustain large populations, so many animals become extinct.
D
Earth does not change much, so populations must adapt to survive.
6

According to Darwin’s theory of evolution, in which order do the steps of natural selection happen?

A
Some members of a population survive and reproduce, their environment or location changes, and favorable traits are passed on to offspring.
B
A population’s environment or location changes, some members survive and reproduce, and favorable traits are passed on to offspring.
C
Favorable traits are passed on to offspring in a population, some members survive and reproduce, and the environment or location changes.
D
Some members of a population survive and reproduce, favorable traits are passed on to offspring, and their environment or location changes.
7

genetic mutationnatural selectionpopulation growthasexual reproduction

A
genetic mutation
B
natural selection
C
population growth
D
asexual reproduction
8

Which best explains how scientists confirmed that the moon formed around the same time as Earth?

A
Scientists determined the approximate age of fossils from the moon and Earth.
B
Scientists used radioactive dating to study the age of material from the moon and Earth.
C
Scientists explored the cycle of condensation and evaporation over time on the moon and Earth.
D
Scientists analyzed the content of gases that were part of the atmospheres on the moon and Earth.
9

Which characteristic of potassium makes it useful for dating rocks?

A
It has a long half-life.
B
It decays at an unknown rate.
C
It produces lead as it breaks down.
D
It can be used to date all types of rock.
10

Which period belongs to the Paleozoic era and not the Cenozoic era?

A
Devonian
B
Neogene
C
Paleogene
D
Quaternary
11

Which important event in Earth’s history occurred during the Jurassic period?

A
The first birds emerged on Earth.
B
Mammals were in search of food.
C
Animals with shells emerged on Earth
D
Treelike ferns first began to grow and populate.
12

What caused natural selection among the peppered moths of Manchester, England?

A
natural environmental changes
B
human-caused environmental changes
C
genetic stability in the population
D
resource stability in the population
13

Which event is most likely if an index fossil is found in a layer at location 1, but the layer and index fossil are not found at location 2 nearby, which is known to be the same relative age?

A
The layer at location 2 is too old to contain fossils.
B
The locations were too close together.
C
The organism did not exist at location 2.
D
The layers at location 2 formed much earlier than those at location 1.
14

The fossil record helps scientists identify a single species from which other organisms have descended. Which is used to refer to this single species?

A
parent organism
B
fossils
C
descendant
D
common ancestor
15

A population of rabbits inhabits an island that has an active volcano. The volcano erupted and covered the island destroying most of the food resources available for animals living in the area. As the island recovers, the soil no longer allows for these food resources to grow.

A
There will be fewer predators that eat the rabbits, so the rabbit population will quickly grow.
B
Other animals will eat less food, so the rabbit population will remain stable.
C
The rabbits will adapt to eating very little food, so the population will increase slowly over time.
D
Few rabbits will be able to find food, so the population will die off and become extinct.

Did you find these answers helpful?

More from this Course

Quiz
14 verified answers

Unit Test

Quiz
12 verified answers

Unit Test

Quiz
4 verified answers

Unit Test

Unit Test — Unit test Answers — FL-2002070-MJ…