WorksheetsLGF Human Impact
Total questions: 20
Worksheet time: 25mins
Name
Class
Date
1.
Which human activity would preserve nonrenewable resources?
a)
deforestation
b)
removing
carnivores from a forest
c)
recycling
d)
heating homes with fossil fuels
2.
Increased industrialization will most likely
a)
decrease
available habitats
b)
increase
environmental carrying capacity
c)
increase
the stability of ecosystems
d)
decrease
global warming
3.
Deforestation of areas considered to be rich sources of genetic material could limit future agricultural and medical advances due to
a)
the
maintenance of dynamic equilibrium
b)
the
loss of biodiversity
c)
an
increase in the ecosystem’s carrying capacity
d)
the
depletion of the ozone layer
4.
Deforestation by burning has been described as a "double whammy" to the environment, meaning it has 2 negative impacts. Why is this description accurate?
a)
Forest
burning releases CO2 while decreasing oxygen, which disrupts cycles
b)
Deforestation
reduces the amount of oxygen in the atmosphere, which depletes the ozone layer
c)
Forest
clearing is often followed by land development, which often leads to increased
noise pollution
d)
Deforestation
increases the number of plant and animal species by destroying habitat
5.
A large tract of land is purchased by a commercial agricultural company. The land is cleared of its native flora (plants), and a single crop is planted instead. What is the effect of this action?
a)
There is an increase in the variety of foods.
b)
The biodiversity of the area is reduced.
c)
There
is a reduction in the size of the land
d)
The
cost of the planted crop increases
6.
Many common products, such as wooden furniture, paper, and books, are made from trees. Which of the following is a likely consequence of humans cutting down a forest in order to make use of the natural resources there?
a)
the
decrease of chemical runoff into the oceans
b)
increased
acid rain
c)
the
increase of light pollution in cities
d)
the
destruction of habitats
7.
What are renewable resources?
a)
Resources
that are used faster than they form
b)
a.
Resources that can replenish
themselves over time
c)
a.
Resources that exist only in urban
areas
d)
Resources
that exist only in rural areas
8.
Human activities that degrade ecosystems result in a loss of diversity of the living and nonliving environment. Two ways in which humans frequently harm ecosystems and affect other organisms is through land use and pollution.
How does land use cause a reduction in biodiversity?
How does land use cause a reduction in biodiversity?
a)
It
decreases the space and resources available to certain species
b)
It
causes herbivores to become carnivorous
c)
It
provides a more hospitable living environment
d)
It
causes all the natural Earth cycles to stop
9.
What may happen when a lake ecosystem becomes polluted with fertilizers or pesticides?
a)
increase in dissolved oxygen
b)
eutrophication
c)
. increased rate of decomposition by detritivores
d)
increase in carrying capacity of the ecosystem
10.
The number one threat to biodiversity
a)
pollution
b)
fragmentation
c)
habitat destruction
d)
limiting factors
11.
Invasive species are:
a)
non-native
b)
harmful to an ecosystem
c)
organisms that can lack predators in the new environment
d)
all of the answers are correct
12.
If the population of a certain predator increases, there is often _______ its prey
a)
a decrease the population of
b)
an increase of the population of
c)
great news for its prey of
d)
no impact found on
13.
Why is it important to conserve the biodiversity of Earth?
a)
to decrease the amount of global predator populations
b)
to decrease the stability of major global ocean currents
c)
to increase the stability of ecosystems during environmental changes
d)
to increase the amount of nonrenewable resources located in the lithosphere
14.
What long-term impact could the destruction of large areas of forests have on Earth?
a)
decreased rates of erosion
b)
increased atmospheric carbon dioxide levels
c)
decreased amounts of acid rain
d)
increased atmospheric oxygen levels
15.
Which is a main cause of soil erosion?
a)
strong winds
b)
flash floods
c)
human activity
d)
fossil fuels
16.
All of the following are examples of environmental changes that can be caused by humans except -
a)
clearing land for housing developments
b)
pesticides
c)
volcanic eruption
d)
pollution
17.
What is biodiversity?
a)
The variety of species used for food sources
b)
The variety of exotic species
c)
The variety of extinct species
d)
the variety of life in the world or in a particular habitat or ecosystem.
18.
Globally, the leading cause of biodiversity loss is
a)
invasive species
b)
poaching and overharvesting
c)
pollution
d)
habitat change and loss
19.
any undesirable factor added to the air, water, or soil
a)
particulates
b)
ozone
c)
pollution
d)
smog
20.
How does nutrient-rich agricultural runoff influence water ecosystems?
a)
increases overall productivity
b)
increases oxygen levels
c)
decreases algal productivity
d)
can result in harmful algal blooms
100 %
