The Energy Pyramid

BiogeochemicalCycles

The Greenhouse Effect

100

200

300

400

500

100 100 100 100

200 200 200 200

300

400

500

300 300 300

400 400 400

500 500 500

InterdependenceFood Webs & Trophic Levels

$100 Question:This diagram shows how energy moves through an ecosystem.

What is this diagram called?

$100 Answer

A Food Web

$200 Question:Refer to the diagram below. Which type of consumer are the

leopard seals?

$200 Answer:

Carnivores

$300 Question:Refer to the diagram below. The organisms at the highest trophic

level are…

$300 Answer:

The Killer Whales

$400 Question:

In a food web, which type of organism receives energy from every other type?

$400 Answer:

Decomposers

$500 Question:

In an ecological pyramid, animals that feed on plants are located in which

trophic level?

$500 Answer:

In a food web, which type of organism receives energy from every other type?

$500 Answer:

Second trophic level

The Energy Pyramid $100 Question:

On the energy pyramid, animals that feed on plant eaters are no lower than which trophic

level?

The Energy Pyramid $100 Answer:

Level 3

The Energy Pyramid $200 Question:

Refer to the diagram below. How much energy is available to the organisms in level 3?

The Energy Pyramid $200 Answer:

About 10% of the energy in level 2.

The Energy Pyramid $300 Question:

How many levels can be in an ecological pyramid? Explain.

The Energy Pyramid $300 Answer:

The number of trophic levels is limited by the amount of energy that

is lost at each trophic level.

The Energy Pyramid $400 Question:

What is the relationship between producers and consumers?

The Energy Pyramid $400 Answer:

Producers convert energy from the sun or from organic molecules. Consumers obtain energy by eating other

organisms.

Food chains always begin with a producer and end with a consumer.

Producers and consumers are necessary to maintain balance in an ecosystem.

The Energy Pyramid $500 Question:

In most years, oak trees produce few or no acorns. Every few years, however, they produce a huge crop of acorns. The large number of acorns supports larger populations of deer and mice, which feed on

the acorns. Ticks feed on the blood of animals, so the tick population also increases. What would happen if during one season, the oak

trees didn’t produce any acorns?

The Energy Pyramid $500 Answer:

The deer and mice population would decrease because they have a smaller food supply.

Without as many deer the tick population would also decrease.

Interdependence$100 Question:

What is the difference between a producer and a consumer?

Interdependence$100 Answer:

Producers (plants) make their own food while consumers must eat or consume other things to get

their energy.

Interdependence$200 Question:

If a population of wolf and moose existed in the same ecosystem, what would happen to the wolf population if the moose population

decreases?

Interdependence$200 Answer:

The wolf population would decrease.

Interdependence$300 Question:

What kinds of factors would cause the wolf population to increase in that ecosystem?

Interdependence$300 Answer:

Disease introduced into the area, increase/decrease in food supply

Interdependence$400 Question:

Describe Interdependence.

Interdependence$400 Answer:

Interdependence is a key theme found throughout ecology.

Interdependence is the dependence of every organism on its connections with other living and nonliving parts of its environment.

Interdependence$500 Question:

What is the difference between biotic and abiotic factors?

Interdependence$500 Question:

Abiotic Factors = Non-Living Things (air, water, rocks, dirt)

Biotic Factors = Living Things (plants, animals, bacteria)

Both are part of an ecosystem.

Biogeochemical Cycles$100 Question:

List the four biogeochemical cycles.

Biogeochemical Cycles$100 Answer:

The Water CycleThe Carbon Cycle

The Nitrogen CycleThe Phosphorus Cycle

Biogeochemical Cycles$200 Question:

Which of the four cycles involves photosynthesis and cellular respiration?

Biogeochemical Cycles$200 Answer:

The Carbon Cycle

Biogeochemical Cycles$300 Question:

Which biogeochemical cycles involves precipitation, transpiration, evaporation and condensation?

Biogeochemical Cycles$300 Answer:

The Water Cycle

Biogeochemical Cycles$400 Question:

Explain why the carbon cycle is so important to living things.

Biogeochemical Cycles$400 Answer:

In the carbon cycle, plants perform photosynthesis while animals perform cellular respiration.

In photosynthesis, plants make their own food from sunlight. In the process, they give off oxygen that animals use.

In cellular respiration, animals break down food to get energy. In the process, they give off carbon dioxide that plants use.

Biogeochemical Cycles$500 Question:

Explain why the nitrogen cycle is necessary for all organisms to survive.

Biogeochemical Cycles$500 Answer:

All organisms need nitrogen to make proteins and nucleic acids. In other words, all organisms need oxygen to make up who we are!

The Greenhouse Effect$100 Question:

What is the Greenhouse Effect/Global Warming?

The Greenhouse Effect$100 Answer:

The ozone layer is slowly being destroyed allowing the sun’s harmful UV rays to come through and heat up the planet. This is causing

increased global temperatures (global warming).

The Greenhouse Effect$200 Question:

Using the picture below, explain the greenhouse effect. In your explanation, refer to the numbered parts.

The Greenhouse Effect$200 Answer:

1.Solar radiation passes through the clear atmosphere. 2.Most radiation is absorbed by the Earth’s surface and warms it.

3.Some solar radiation is reflected by the Earth and the atmosphere. 4.Infrared radiation is emitted from the Earth’s surface.

5.Some of the infrared radiation passes through the atmosphere. Some is absorbed and re-emitted in all directions by greenhouse gas molecules. The effect of this is to warm the Earth’s surface and the

lower atmosphere.

The Greenhouse Effect$300 Question:

The amount of greenhouse gases released into the atmosphere by human activities has increased over recent years. Predict a possible

result of this trend.

The Greenhouse Effect$300 Answer:

An increase in carbon dioxide may increase the temperature on the surface of Earth.

The Greenhouse Effect$400 Question:

List some causes of global warming.

The Greenhouse Effect$400 Answer:

Pollution from factories, cars, CFC’s, etc.

The Greenhouse Effect$500 Question:

Choose a species that might be affected by global warming and predict how that species might be affected.

The Greenhouse Effect$500 Question:

Answers will vary.