Protecting Biodiversity

Which of the following factors is most likely to decrease the stability of an ecosystem?

• An increase in animal biodiversity

• An increase in plant biodiversity

• the removal of one individual animal

• the removal of one species

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5

What does the diversity index take into account when measuring diversity?

• Richness

• Abundance

• Evenness

• All of these

Which of the following would help maintain the native biodiversity in a forest ecosystem?

• Introducing invasive species into the forest.

• Building a hydroelectric dam on a river that runs through the forest.

• Cutting down trees to construct roads and homes.

• Passing laws to prevent hunting during the animals’ mating seasons.

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5

A natural disaster caused an ecosystem to experience a drop in species richness. What conclusions can be made about this ecosystem.

• Evenness changed from high to low.

• There’s decreased biodiversity in the ecosystem.

• Evenness changed from low to high.

• There’s increased biodiversity in the ecosystem.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

What does it mean for an ecosystem to have "evenness among the species studied"?

• The population size between the different groups of species are similar.

• The population size between the different groups of species are different.

• All organisms within the ecosystem play an even role.

• All organisms within the ecosystem have an even size.

Tags

NGSS.MS-LS2-5

When monitoring the species on an island, scientists found several members of a new species they had never seen before in their sample. What could this new species mean?

• A native species has changed its range.

• An invasive species has been introduced into the area.

• The scientists failed to detect the species in their previous evaluations of the area.

• The species isn’t a part of the ecosystem.

Tags

NGSS.MS-LS2-4

Scientists have developed an allergy medication from a plant that is part of the rainforest food chain. What concern might develop when producing this medication from the plant?

• Overproduction of the medication.

• Increase in allergies in rainforest wildlife.

• Lack of patients to test the new medication.

• Decrease in a food source to rainforest wildlife.

Tags

NGSS.HS-ESS2-7

NGSS.HS-LS2-6

NGSS.HS-LS2-7

NGSS.HS-LS4-5

Which of the following would have a positive impact on the abiotic factors of an ecosystem?

• Keeping lakes and rivers free of pollution.

• Planting new trees to provide food for animals.

• Monitoring the ecosystem for bacterial pathogens that can cause illness.

• Mating endangered animals in captivity and restoring them to their natural habitat.

Tags

NGSS.MS-LS2-5

What is reclamation?

• The concept that items can be used again.

• Nitric and sulfuric acid condensing into clouds and falling to Earth.

• The process of restoring a damaged ecosystem.

Tags

NGSS.MS-LS2-5

What term describes the variety of different organisms found in an ecosystem?

• population

• biodiversity

• ecosystem services