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WorksheetsHolt Environmental Science
Total questions: 15
Worksheet time: 15mins
The wettest biome is
grasslands
desert
taiga
tundra
tropical rain forest
The distance north or south of the equator, as measured in degrees, is called
altitude.
latitude.
longitude.
magnitude.
The main factor that determines what type of plants grow in a biome is
temperature.
precipitation.
altitude.
Both temperature and precipitation
Biomes with higher temperatures and less precipitation tend to have
shorter and less dense vegetation.
taller and denser vegetation.
taller and less dense vegetation.
shorter and denser vegetation.
Biomes that are located between 30º north latitude and 30º south latitude might be
tropical rain forests.
grasslands.
taiga.
tundra
Which of the following best describes the relationship among latitude, altitude, and climate?
Climate becomes colder as you get closer to sea level
Climate becomes warmer as you move up a mountain.
Climate becomes warmer as you move toward the poles.
Climate becomes colder as you move up a mountain.
The driest biome is
grasslands
desert
taiga
tundra
tropical rain forest
A species that are critical to the functioning of an ecosystem
hybrids
ecotourism
genetic diversity
keystone species
All the different genes contained in all members of a population
hybrids
ecotourism
genetic diversity
keystone species
The number and variety of different species in a given area
hybrids
biodiversity
genetic diversity
keystone species
Hunting sea otters along the U.S. Pacific coast resulted in
an increase in biodiversity.
a decrease in biodiversity.
a reduction in the sea urchin population.
the extinction of kelp.
A crop that results from combining genetic materials is called
a hybrid variety.
a bottleneck offspring.
a keystone species.
a wildflower species
Which level of biodiversity may still be reduced after a species recovers from a threat to its survival?
ecosystem diversity
genetic diversity
species diversity
population diversity
Which of the following is a primary cause of acid rain?
A) Carbon dioxide emissions
B) Sulfur dioxide emissions
C) Methane emissions
D) Nitrogen gas emissions
What is the main purpose of the Clean Air Act?
A) To regulate water pollution
B) To protect endangered species
C) To control air pollution
D) To manage waste disposal
