WITH ACCURATE AND VERIFIED SOLUTIONS
RATED A.
Which of the following is true of tree plantations?
A. They are not biologically diverse.
B. They take a very long time to return a profit.
C. They are usually clear-cut before they are sufficiently mature.
D. They cannot be used for paper products.
E. They contain trees that are not of a uniform age.
A. They are not biologically diverse.
Four of the following are important ecological services provided by
forests; one is not. Choose the one that is not.
A. Reduces soil erosion
B. Releases atmospheric carbon
C. Purifies water and air
D. Influences local and regional climate
E. Provides numerous wildlife habitat
B. Releases atmospheric carbon
The key role of a honeybee in agriculture is to _____ plants and flowers.
A. pollinate
B. populate
C. produce
D. protect
E. preserve
A. pollinate
After a mass extinction, what happens to biodiversity rates?
A. They never recover.
B. They quickly recover.
C. They recover over thousands of years.
,D. They recover over millions of years.
E. They stabilize at a "new normal."
D. They recover over millions of years.
Biologists think there are four major reasons why we should work to
prevent human activities from causing the extinction of other species.
Which of the following is the exception?
A. Species are part of the earth's life support system.
B. Most species contribute to services that support our economies.
C. It will take 5-10 million years to rebuild the biodiversity.
D. We need animals, especially rare animals, for zoos.
E. Each species has a right to exist even if it isn't useful to us.
D. We need animals, especially rare animals, for zoos.
Four of the five statements about nonnative species are true. Select the
exception.
A. The spread of nonnative species is the second-largest threat to animal
and plant ecosystems.
B. Nonnative species provide no benefits in their new habitats.
C. Introduced species do not have natural predators in their new
ecosystem.
D. Nonnative trees are grown in 85% of the world's tree plantations.
E. Invasive species rarely cause global extinctions of other species.
B. Nonnative species provide no benefits in their new habitats.
Population declines among birds, especially long-distance migrant birds,
have several primary causes. Which of the following causes is the
exception?
A. Habitat loss and fragmentation
B. Introduction of nonnative species
C. Collisions with power lines, towers, and skyscrapers
D. Intentional poisoning of food supplies
E. Climate change
D. Intentional poisoning of food supplies
, According to researchers, the greatest threat to wild species is _____.
A. habitat destruction
B. invasive species
C. population and resource use growth
D. pollution
E. climate change
A. habitat destruction
How do the tropical rain forests differ from the temperate deciduous
forests?
A. Rain forests have more foliage at ground level than deciduous forests.
B. Rain forests have fewer lianas than deciduous forests.
C. Deciduous forests have a slower rate of decomposition than rain
forests.
D. Rain forests have lower species diversity than deciduous forests.
E. Deciduous forests have a dense canopy of broad leaves, compared with
an open canopy of the rain forest.
C. Deciduous forests have a slower rate of decomposition than rain forests.
Biomes are characterized by _____.
A. light and temperature
B. climate and light
C. light and climate
D. climate and dominant plant life
E. dominant plant life and temperature
D. climate and dominant plant life
What is one consequence if mountaintop glaciers disappear?
A. The mountains will have to be closed to human access.
B. New glaciers will form relatively quickly.
C. The locations will make prime areas for development.
D. There will be few economic effects.
E. Some people will have difficulty obtaining enough water.
E. Some people will have difficulty obtaining enough water.