Human Interactions within the Ecosystem
Ecosystem Interactions
Resources Availability and Population
Energy and Matter Flow
Ecosystem Stability
100

Activities like hiking, camping, and boating can harm plants and disturb wildlife.  To avoid this, how should humans enjoy nature?

What is responsible recreational activity?

100

This type of relationship occurs when one organism hunts and kills another for food.

What is predation?

100

This is the impact on population growth when a resource such as water becomes limited in an ecosystem. 

What is a decrease in population size?

100

This type of organism, which gets energy from the sun, forms the foundation of all food webs.

What is a producer?

100

This happens when a change in an ecosystem disrupts the balance of predator and prey relationships, leading to population shifts.

What is population imbalance?

200

This human-made pollutant comes from factories and cars and harms plants and animals.  

What is air pollution?

200

In this type of relationship, both species benefit, such as bees pollinating flowers while gathering nectar.

What is competition?

200

When this resource is scarce, populations may struggle to survive, especially in dry ecosystems like Utah's deserts.

What is water?

200

These organisms consume producers or other consumers to obtain energy.

What is a consumer?

200

When this factor changes, such as an increase in temperature, it can disrupt ecosystems and lead to changes in species populations.

What is climate?

300

This human activity involves cutting down trees and can harm ecosystems and animals living in forests. 

What is deforestation?

300

This occurs when organisms compete for limited resources like food, water, and space.

What is competition?

300

This resource is necessary for growth and reproduction and often influences the carrying capacity of a population in an ecosystem.  

What is food?

300

These organisms break down dead matter and recycle nutrients back into the ecosystem.

What is a decomposer?

300

These types of disturbances, like fires or floods, can temporarily alter an ecosystem, but organisms adapt and populations recover.

What is natural disturbances?

400

This type of farming can reduce biodiversity by replacing natural habitats with large crops.

What is large scale farming?

400

In this type of relationship, two species live in close contact, often benefiting one or both of them, like oxpeckers and buffalo.

What is symbiosis? 

400

A decrease in this resource can limit the area in which a species can live, resulting in population decline. 

What is habitat or living space?

400

This process, carried out by plants, involves turning sunlight into chemical energy for food.

What is photosynthesis?

400

A new species introduced to an ecosystem can compete with native species, sometimes leading to the decline of the native population.

What is an invasive species?

500

This natural feature acts as a filter, removing pollutants from water before it reaches rivers and lakes, helping provide cleaner water for human consumption, reduce flooding, and provide homes for many animals such as fish and birds.

What are wetlands?

500

This type of interaction occurs when one organism lives on or inside another organism and harms it, such as a tick on a dog.

What is parasitism? 

500

This is term for the maximum number of individuals an ecosystem can support based on resources.

What is carrying capacity?

500

The movement of energy from producers through consumers to decomposers can be represented by this model.

What is a food web?

500

In some ecosystems, the introduction of a new food source or predator can significantly change the population sizes of other species.

What is an ecosystem shift?