Ecosystems, Biodiversity, Human Impacts, and Ecological Successi

Food Webs within Ecosystems

By Heather Gomez

1. Underline the producers

2. Circle the primary consumers

3. Put a square around the secondary consumers

4. Put a triangle around the tertiary consumers

Math Response

Based on the food web, what is the total number of organisms that consume producers?

Type answer here

Correct Answer: 6

Deg^°

Rad

Open Ended

Based on the food web, which organisms would the fox most likely compete with for food sources?

Hotspot

A partial food web is shown.

Which two organisms compete with rabbits for biotic resources.

Select TWO correct answers.

1. Label the trophic levels

2. What trophic level gets the most energy? Why?

3. How much energy is transferred to each level?

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Energy Pyramid

1. .

2. .

3. .

4. .

5. .

Human dependency on ocean

Positive impacts

Negative impacts

​Human impacts on the ocean

1. .

2. .

3. .

1. .

2. .

3. .

4. .

Multiple Choice

Overfishing reduces the number of fish at a rate that causes long-term reductions in fish populations. The table shows the percentage of fish species in the ocean that were overfished in three different years.

Which action would MOST LIKELY reverse the trend shown in the table?

• Increasing the total weight of fish that each ship can remove from the ocean day.

• Requiring ships to return non-adult fish to the ocean so that they can grow and reproduce.

• Decreasing the number of policing ships in order to lesson capacity restrictions and regulations.

• Promoting mass centered around specific fish species in restaurants in order to increase profits.

​ Sustainability in ecosystems:
1.
2.
3.
4.

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Biodiversity

Multiple Choice

This question has a part a and part b.

Part A: Using the information provided in the tables, which of the following statements best describe the sustainability of the ecosystems.

• The grassland ecosystem has a greater sustainability than the forest ecosystem.

• The grassland ecosystem and the forest ecosystem have the same sustainability.

• The forest ecosystem has a greater sustainability than the grassland ecosystem.

• There is not enough information to determine the sustainability of each ecosystem.

Multiple Choice

Part B: Which of the following BEST supports the answer to Part A?

• Ecosystems with fewer top predators and more producers have a greater sustainability.

• Ecosystems with fewer producers and more top predators have a greater sustainability.

• The sustainability of an ecosystem depends on more factors than the organisms living in the area.

• Ecosystems with a greater number and a greater diversity of oranisms are more sustainable.

​1.
2.
3.

Primary Succession

​1.
2.
3.

Secondary Succession

​Ecological Succession

Multiple Choice

Controlled burns are fires that are purposely set within a designated area when conditions are sage for the public and for the firefighters who water of the fire. Weather and forest conditions are monitored both before and during the burn. Controlled burns rid of forests of tree limbs, dead leaves, and other debris. Which prediction can be made about a forest after a controlled burn has occurred?

• The ability of plants to reproduce with decrease.

• Important nutrients for new plant growth will be returned to the soil.

• Short-term quality in the area will improve.

• Long-term biodiversity will be reduced.

Categorize

Options (8)

Begins with lichen and moss

Starts because of a forest fire

Soil is already present

Starts with bare rock

First organisms are grasses

Occurs after lava cools and hardens

Results in a climax community

Occurs in a specific sequence.

Drag and drop each item as either primary succession, secondary Succession, or both.

Primary Succession

Secondary Succession

Both