Transcript Notes #7 - Duplin County Schools

Monday
February 13, 2017
I can:
Agenda
Catalyst
(10) Catalyst
(15) GN: Addressing Human
Impacts
(15) Kahoot!
(30) Team Attack
(15) Taboo
1. What is an example of a
sustainable energy source?
2. What is the pH of an acidic
substance? A neutral
substance? An alkaline
substance?
3. What is one impact of
deforestation?

analyze ways in which human
impacts can be mitigated
HW: Addressing Human Impacts
Deforestation
Apart from upsetting
the balance of CO2,
how else does
deforestation
negatively affect the
ecosystem?
Acid Rain
What range of pH is
considered to be
acidic?
What causes acid rain?
Introduction of Non-native Species
What is a non-native
species?
How do non-native
species negatively
impact other
ecosystems?
Humans have reshaped ecosystems…
but through coordinated, research-backed
efforts, we can make a positive impact on the
environment.
Ozone Depletion : A Success Story
The ozone layer is a layer in the atmosphere
that contains a high concentration of ozone gas.
ozone = O3
Ozone Layer
Ozone absorbs harmful UV radiation from the
sun.
• exposure to UV causes sunburn, cancer, and
damages eyes
Ozone Depletion
Gases called chlorofluorocarbons (CFCs) destroy
the ozone layer.
CFCs were used in aerosol
cans and as coolants in
refrigerators and air
conditioners.
Banning CFCs
In 1987, 46 countries agreed to ban most CFCs
by 2000. The ozone layer is now showing signs
of recovery.
Solving large-scale
ecological problems is
possible with the
coordinated efforts of
many nations to protect
the Earth.
Ozone Depletion
Climate Change
Climate is the average pattern of
weather over a long period of time.
CO2
CO2
CO2
CO
2
Climate Change
Climates around the world ARE changing
because of the greenhouse effect.
CO2
CO2
CO2
CO
2
Greenhouse Effect
Like the glass in a greenhouse, the
atmosphere of the Earth traps heat.
CO2
Greenhouse Effect
Greenhouse
gases such as
carbon dioxide
prevent heat
from escaping.
CO2
CO2
CO2
CO
2
Climate Change
Carbon
dioxide
is
the
main
greenhouse
Greenhouse gases make the
gas.
•
•
planet
get
warmer!
humans add CO2 to the atmosphere
by driving cars ….
once CO2But
is in so
the what?
atmosphere, it
traps heat
Why is climate change a bad thing?
Climate change kills species such as the polar
bear who depend on the melting ice caps.
It means there is less food available for
humans to eat and less good water to drink.
Biodiversity
bio = life
diversity = different kinds
Biodiversity = different
kinds of life (number of
different species)
When human actions
cause species to die we
lose biodiversity.
How do you think human actions might reduce biodiversity?
Write on your boards!
Give an example of a greenhouse gas.
Write on your boards!
Which molecule is responsible for blocking UV
rays from the sun?
Write on your boards!
Which compound causes the ozone layer to
deteriorate?
Write on your boards!
Which process causes the buildup of harmful
chemicals in organisms’ bodies?
KAHOOT!
Team Attack!
• Each group starts off with 10 X’s on the board.
• A question will be presented on the SmartBoard, and
each team has 1 minute to write their answer on their
whiteboard and hold it up when time is called.
• When time is up, I’ll pick a stick, and whoever’s team is
picked gets a chance to explain their answer to the
question and attack – if they got the answer right.
• If you get the question right, 1 person from each team
may come up and remove 2 X’s on the board. The team
with the most X’s at the end wins!
Which of the following is considered a
greenhouse gas used to keep heat in the
environment?
A. Oxygen
B. Nitrogen
C. Trace gases
D. Carbon dioxide
Which human activity causes
an immediate increase in the amount of
greenhouse gases in the atmosphere?
A. Deforestation
B. Reforestation
C. Burning fossil fuels
D. Biological magnification
Which is a reason why invasive species thrive in
new habitats?
A. Their new habitats have reached carrying
capacity.
B. Their new habitats lack the natural resources
needed for population growth.
C. Their new habitats have many predators that
limit their population growth.
D. Their new habitats may not have the same
predators found in their previous
environment that can limit their population
growth.
Which is most likely to occur as more forested
areas are converted to non-forest lands?
A. Animal habitats will decline and biodiversity
will decrease.
B. Deforested areas will become more fertile
for producing crops.
C. Global warming problems will decrease,
reducing carbon dioxide levels in the
atmosphere.
D. The amount of water in soil and in
groundwater will increase, since trees are
not using water.
Which best distinguishes between renewable and
nonrenewable resources?
A. Renewable resources are replenished by nature,
while nonrenewable resources are replenished by
man.
B. Renewable resources are replenished by man,
while nonrenewable resources are replenished by
technology.
C. Renewable resources are used up and replaced in
a short time period, while nonrenewable
resources take thousands of years to replace.
D. Renewable resources can take thousands of years
to replace, while nonrenewable resources are
replaced in a relatively short period of time.
Which is the most accepted hypothesis as to why
invasive species take over communities into which
they are introduced?
A. Invasive species are more aggressive in competing
for the limited resources of the environment.
B. Invasive species have a higher reproduction
potential than the native species already present.
C. Invasive species come from geographically
isolated regions and thrive in areas of high
competition.
D. Invasive species are not held in check by the same
predators and diseases that limit native species.
A small group of monkeys discover how to
break open nuts by smashing them with a
rock. Their offspring learn this skill through
observation. Which type of adaptation is
represented by these monkeys?
A. behavioral adaptation
B. structural adaptation
C. reproductive adaptation
D. environmental adaptation
Which best describes the long term effects
of increased carbon dioxide emissions?
A. There will be decreased solar activity.
B. Temperatures on Earth will decrease.
C. Temperatures on Earth will increase.
D. Less carbon dioxide will dissolve into
oceans.
In which level is most of the available energy located
within an energy pyramid?
A. The producer level has the largest amount of
available energy because it stores energy from the
sun and supports all other trophic levels.
B. The primary consumer has the largest amount of
available energy because it requires less energy to
digest its vegetarian diet.
C. The secondary consumer has the largest amount
of available energy because more energy is
obtained from a meat-eating diet than from
plants.
D. The tertiary consumer has the largest amount of
available energy because it is at the top of the
energy pyramid.
Which human activity most likely causes acid
rain?
A. using chlorofluorocarbons (CFCs)
B. generating nuclear energy
C. burning fossil fuels
D. using pesticides
Which statement about the carbon cycle is
true?
A. The carbon cycle ends when an organism
dies.
B. Only animals are involved in the carbon
cycle.
C. Carbon exists only as carbon dioxide in
the cycle.
D. Carbon dioxide is released to the
atmosphere by cellular respiration.
Which describes the impact predators have
on the population growth of the prey?
A. Predators maintain the prey population.
B. Predators increase the prey population
growth.
C. Predators decrease the prey population
growth.
D. Predators have no impact on the
prey population growth.
Which population will suffer the greatest
negative effects of disease?
A. low number of individuals in a small area
B. low number of individuals in a large area
C. high number of individuals in a small area
D. high number of individuals in a large area
Most of a snow leopard’s diet consists of
rabbit. What is most likely to happen if the
population of snow leopards doubles?
A. Rabbit population will double.
B. Snow leopards will become extinct.
C. Rabbit population will decrease by half.
D. Neither the snow leopard, nor the rabbit
populations will be affected.
A microscopic organism enters the body of
another organism and lives and multiplies in
the intestines of its host. The host does not
benefit from the relationship. What
term best describes this relationship?
A. Competition
B. Mutualism
C. Parasitism
D. Predation
A bird eats the ticks on the coat of an
impala. What kind of relationship is this?
A. Parasitic
B. Predatory
C. Mutualistic
D. Competitive
Which would most likely occur if the global
totals of the products of respiration exceeded
the global totals of the products of
photosynthesis?
A. The total amount of carbon dioxide would
increase.
B. The amount of available carbon dioxide
would remain the same.
C. The amount of available carbon dioxide
would be significantly reduced.
D. Carbon dioxide totals would be balanced
throughout the components of the
hydrosphere.
Which organism belongs to the trophic level
with the least amount of energy available for
sustaining and maintaining life?
A. Frog
B. Grass
C. Snake
D. Grasshopper
Ants patrol the area where aphids feed,
stinging and biting any other insects on the
plants. In return, the aphids produce
honeydew, a sugary substance on which the
ants feed. Which best describes the
relationship that exists between the ants
and the aphids?
A. Commensalism
B. Predation
C. Parasitism
D. Mutualism
Which best describes the amount of carbon
in the carbon cycle? (Hypothetically)
A. It is increasing.
B. It is decreasing.
C. As the output equals the actual amount
absorbed, it remains constant.
D. It fluctuates depending on the number of
plants available for photosynthesis and
respiration.
Which is considered a mutualistic
relationship?
A. positive—negative
B. positive—no effect
C. positive—positive
D. negative—no effect
Why does atmospheric carbon dioxide
increase as a result of deforestation?
A. Grass often replaces forests.
B. Farmers plant corn and soybeans.
C. There are fewer trees to absorb it.
D. The trees shade the soil from the sun.
In an experiment, a dog was made to
salivate when it heard the ringing of a bell.
Which type of learning is demonstrated by
the dog?
A. Imprinting
B. Habituation
C. Conditioning
D. Trial and error
An energy pyramid shows the loss of energy at
each trophic level. Which explains why energy is
not really lost?
A. Some energy remains in the first trophic
level.
B. An organism conserves its energy and stores
it.
C. Some energy is converted into waste and
heat energy.
D. An organism transfers its energy back and
forth between trophic levels.