NGSS.HS-LS2-6

This is known as a relationship in which both organisms involved benefit. 

• Predator-Prey
• Commensalism
• Mutualism
• Decomposition

Tags

NGSS.HS-LS2-6

During the early settlement of the United States, pioneers cut down large tracts of forests on the east coast to use for home construction, for firewood, and to create cleared spaces to plant crops.What was the most likely effect of this kind of action?

• decreased plant and animal diversity
• decreased human populations
• decreased carbon dioxide production
• increased organism biodiversity.

Tags

NGSS.HS-LS2-6

Globally, ____ percent of all coral has already disappeared. 

• 50%
• 20%
• 75%
• 10%

Tags

NGSS.HS-LS2-6

When there is higher biodiversity

• more organisms are likely to die because they can't adapt to environmental changes.
• there is less diversity.
• there is more diversity and higher sustainability of life.
• there is more diversity and lower sustainability of life

Tags

NGSS.HS-LS2-6

The ability to maintain an ecological balance in an ecosystem is 

• engineering
• sustainability
• natural ecosystem
• balanced ecosystem

Tags

NGSS.HS-LS2-6

A relationship between a clownfish and a sea anemone would be described as

• Mutualism

• Commensalism

• Parasitism

• Predation

Tags

NGSS.HS-LS2-6

In 1960, an invasive species of fish was introduced into the stable ecosystem of a river. Since then, the population of a native fish species has declined. This situation is an example of an

• ecosystem that has recovered

• ecosystem altered through the activities of an organism

• environmental impact caused by physical factors

• ecological niche without competition

Tags

NGSS.HS-LS2-6

The clownfish lives among the tentacles of tropical sea anemones. The stinging tentacles of the anemone protect the clownfish from predators. The mucus on the fish protects it from the tentacles. In turn, the anemone is provided food from the predators that approach the anemone to eat the clownfish. What type of relationship does this example describe?

• parasitism

• mutualism

• competition

• commensalism

Tags

NGSS.HS-LS2-6

Sb5e

Scientists and farmers studied how populations of insects on a farm changed after the farmer started using an insecticide on the crops. The diagram shows population sizes, both before and after the insecticide was applied.

What conclusion can be made about the Insect A and Insect B populations?

• The insecticide was specific to Insect B

• The insecticide became less effective for Insect A

• Some insects passed a beneficial mutation to offspring

• The farmer missed spraying insecticide on some plants

Tags

NGSS.HS-LS2-6

How do lichens contribute to primary succession?

• Lichens decompose organic matter from animals and plants
• Lichens begin to break down rock to form soil
• Lichens are nitrogen fixing bacteria
• Lichens convert carbohydrates into fossil fuels.

Tags

NGSS.HS-LS2-6