Ecosystem Stability

Multiple Select

Which of the following are biotic factors found in the picture?

• Fish

• Water

• Coral

• Sunlight

Multiple Choice

Trees, grasses, shrubs, flowering plants, algae and phytoplankton are -

• Abiotic Producers

• Biotic Producers

• Abiotic Consumers

• Biotic Consumers

Draw

Draw the following arrows on your food web:

1. Giraffes receive energy from acacia trees

2. Jackals receive energy from grass rats.

Multiple Choice

What can happen to ecosystems when they are not balanced?

• The ecosystem is healthy and stable

• Energy flows smoothly throughout the food web

• Extinction of a species

• Growth of a species

Multiple Choice

Which ecosystem has high biodiversity?

• The 1st one because it has the most variety of species in each group.

• The 2nd one because it has 2 carnivores.

• The 3rd one because it only has two producers.

Multiple Choice

The habitat with the greatest sustainability will be the one that -

• receives the highest annual rainfall

• has few top-level predators

• has the greatest overall biodiversity

• maintains a moderate climate year-round

Multiple Choice

Which food web has higher biodiversity and will be more sustainable?

• A

• B

Multiple Choice

After a wildfire, what would happen to the deer population that depend on the plants?

• The deer population would stay in the same

• The deer population would increase

• The deer population would decrease

Multiple Select

Which of the following are disruptions to a food web?

Choose THREE.

• Overfishing leading to a decline in the fish population

• Deforestation causing habitat loss for various organisms

• Stable population sizes across all organisms

• Hurricane causing temporary disturbance to coastal ecosystems

• Conservation efforts to protect endangered species

Multiple Choice

This ecosystem is experiencing overhunting of the deer population. What would happen to the grass and wolf populations?

• The grass population would decrease and the wolf population would increase.

• The grass population would increase and the wolf population would decrease.

• Both populations would decrease.

• Both populations would increase.

Multiple Choice

Imagine a lush tropical rainforest with a diverse mix of plant and animal species. Now, consider that a large portion of the large trees are cleared.

The poison dart frogs live among the small plants on the forest floor. The sloths depend on trees for both food and habitat. The jaguar relies on the dense forest for cover and as a source of prey. Which of the following is true?

• The sloth population will increase.

• The frog population will decrease.

• The sloth population will decrease.

• The jaguar population will decrease.

Multiple Choice

How can artificial reefs alter an ecosystem?

• They provide more oxygen to the organisms.

• They provide a new habitat for the organisms.

• They provide less protection for smaller fish.

• They provide additional locations to drill for oil.