Which of the following best describes a population?

members of the same species living in the same place at the same time

all types of organisms living in the same place

all members of the same species

Decomposers are important in the food chain because they

break down dead organisms and recycle nutrients into the soil.

produce their own food using light from the Sun.

stop the flow of energy from one organism to another.

are microscopic and other organisms cannot consume them.

One way that bacteria and fungi are important to the environment is that they

use the sun’s energy to make their own food.

are a major food source in many ecosystems.

The energy consumed by organisms

can be stored in fat and sugar molecules.

remains constant at all trophic levels.

undergoes magnification in food chains.

is not partially lost during digestion.

Only a small amount of the energy stored in food is available to the next organism in a food chain because

most of the energy is used for life processes

there are more producers than consumers in a food chain

there are fewer top consumers than producers in a food chain

primary and secondary consumers compete for food

Which example shows a relationship between both an abiotic and biotic factor in an ecosystem?

A tree removes gas from the air.

An insect is food for a salmon.

Water carries a rock downstream.

A flower makes food for a butterfly.

Consumers are organisms that

a. obtain their energy by eating other organisms

b. get solar or other energy indirectly

c. are also known as self-feeders

d. occupy an ecosystem’s lowest energy level

The “Tragedy of the Commons” describes the conflict between

a. developing and developed nations

b. farmers and industrialized society

Where would an ecologist be least likely to go to study primary succession?

a new island formed by a volcanic eruption

a gravel-filled valley that had been covered by a glacier until recently

a locked, abandoned asphalt parking lot in New York City

Which statement describes how humans are affecting the balance of carbon in the atmosphere?

Burning fossil fuels in great quantities has increased the amount of carbon dioxide in the atmosphere.

Fewer agricultural crops are planted, reducing the amount of carbon dioxide released into the atmosphere.

Overgrazing of grasslands has reduced the amount of carbon dioxide in the atmosphere.

Severe drought in large areas of the world has decreased the amount of carbon dioxide that is released into the atmosphere.

Plants play a crucial role in the carbon cycle because they

allow carbon to enter an ecosystem through photosynthesis.

do not release carbon dioxide during cellular respiration.

have special bacteria that live in their root systems.

are chemically converted into fossil fuels when burned.

The bacteria that live within the roots of a soybean plant are a critical part of the nitrogen cycle because they

change atmospheric nitrogen into a usable form.

provide the plant with sugars needed for growth.

transform nitrates into nitrogen gas for release.

release nitrogen by decomposing dead plant parts.

Succession is possible because

It is a rapid and chaotic process that is very difficult to control.

existing plants reproduce quickly.

new species make the environment less suitable for previous ones.

Which of the following is an example of secondary succession?

growth of plants after a forest is destroyed by fire

breaking down bare rock by fungi and mosses

pioneer plants begin to grow after glacial melting

appearance of weeds in cracks in a concrete surface

Which of the following is responsible for making nitrogen in the atmosphere usable by living organisms?

absorption of nitrogen into water systems

conversion of nitrogen into carbohydrates by photosynthesis

Animals that live in the desert

usually have thin skin to absorb water.

include camels, moose, and various reptiles.

has a layer of soil that is permanently frozen beneath the topsoil.

is too cold to support insect life.

is resistant to environmental damage because it is usually frozen.

are usually described by their vegetation.

contain two ecosystems, hence the name “biome.”

exist in limited regions of the world.

Chaparral plants usually survive fires because

they can resprout from small amounts of surviving plant tissue.

They contain oils that act as natural fire extinguishers.

water is stored in their small, leathery leaves.

They have deep root systems that keep them moist during a fire.

Which of the following adaptations are used by animals of the Arctic tundra?

Rodents burrow underground for winter protection.

Deer and foxes use seasonal camouflage.

Geese and caribou migrate to avoid predators.

Biomes with higher temperatures and less precipitation tend to have

shorter and less dense vegetation.

taller and less dense vegetation.

Tropical rain forests are threatened by

deforestation and the trade of rainforest plants and animals.

a decrease in the average temperature at the equator.

a decrease in rainfall at the equator.

Adaptations of desert animals that help them survive in the hot, dry desert often include

thin skin that readily absorbs water.

large, bulky size to retain body heat on cold nights.

Environmental Science Semester 1 Study Guide Quiz

50 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The energy in most ecosystems comes from

green plants

the sun

wind

soil

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is an ecosystem?

affecting a certain population

all living and nonliving things in an area

an increase in the Earth's temperature

organisms that make their own food

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is one of the main properties used to describe a population?

number of individuals

color of individuals

number of species

kind of adaptations

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The term “biodiversity” refers to

The number of species living on Earth.

The number and variety of species living on Earth.

The number and variety of species that are considered renewable.

The number and variety of species that live in an area.

Tags

NGSS.MS-LS2-5

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Producers make food using ______ to trap the Sun's energy in a process called photosynthesis.

food chains

chlorophyll

cellular respiration

microscopic organisms

Tags

NGSS.MS-LS1-6

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The community of a pond is made up of all the

abiotic factors in the water.

resources organisms need.

habitats in and around the water.

populations of fish, insects, and other living organisms.

Tags

NGSS.MS-LS2-2

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In which of the following relationships is neither species harmed?

predation

competition

parasitism

commensalism

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Environmental Science Semester 1 Study Guide

The energy in most ecosystems comes from

What is an ecosystem?

Which of the following is one of the main properties used to describe a population?

The term “biodiversity” refers to

Producers make food using ______ to trap the Sun's energy in a process called photosynthesis.

The community of a pond is made up of all the

In which of the following relationships is neither species harmed?

What term is used to refer to the many feeding relationships that are possible in an ecosystem?

An example of a population is

Which of the following best describes a population?

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