Populations and the Environment — Unit test

Question 1

The image shows sedimentary rock layers.

Revolt · Accepted Answer

4

Question 2

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

Revolt · Accepted Answer

Devonian

Question 3

The diagram illustrates the water cycle.

Revolt · Accepted Answer

Y

Question 4

Which statement describes competition within a population?

Revolt · Accepted Answer

Two male sea horses fight to win over a female.

Question 5

Which phrase describes one main feature of the atmosphere?

Revolt · Accepted Answer

protects Earth’s surface

Question 6

Which statement describes abiotic factors in an environment?

Revolt · Accepted Answer

Soil retains water and nutrients.

Question 7

Which organisms release carbon dioxide as waste?

Revolt · Accepted Answer

consumers and decomposers

Question 8

What determines the length of a geologic time period?

Revolt · Accepted Answer

fossil record

Question 9

Humans’ use of rocks and minerals as building materials is an example of which interaction?

Revolt · Accepted Answer

an interaction between the biosphere and the geosphere

Question 10

Which characteristic of potassium makes it useful for dating rocks?

Revolt · Accepted Answer

It has a long half-life.

Populations and the Environment — Unit test Answers