LS

What are the limits to the number of organisms and populations an ecosystem can support called?

• Biodiversity limits

• Carrying capacities

• Population thresholds

• Environmental barriers

Which factor does NOT directly affect the carrying capacity of an ecosystem?

• Availability of sunlight

• Predation

• Competition

• Disease

Tags

NGSS.MS-LS2-4

What is a result of extreme fluctuations in conditions or the size of any population in an ecosystem?

• Decreases competition

• Increases the biodiversity

• Challenges the functioning of ecosystems

• Stabilizes the ecosystem

Tags

NGSS.MS-LS2-3

Which process provides most of the energy for life processes?

• Photosynthesis and cellular respiration

• Geothermal energy

• Fermentation

• Fossil fuel combustion

Tags

NGSS.MS-LS1-6

NGSS.MS-LS1-7

What can cause an ecosystem to return to its original status after a disturbance?

• Introduction of invasive species

• Pollution

• Ecosystem resilience

• Overexploitation

Which of the following is NOT a negative effect of human activities on the environment?

• Pollution

• Habitat destruction

• Overpopulation

• Speciation

Tags

NGSS.MS-ESS3-4

What is the primary condition under which anaerobic respiration occurs?

• In the absence of oxygen

• In the presence of sunlight

• At high temperatures

• In aquatic environments

Which of the following best describes the impact of biodiversity on ecosystem functioning?

• Negligible impact on ecosystem productivity

• Increases the rate of natural disasters

• Essential to supporting and enhancing life on Earth

• Reduces the resilience of ecosystems

Tags

NGSS.MS-LS2-5

What is the effect of modest biological or physical disturbances on an ecosystem?

• Rapid increase in biodiversity

• Maintenance of relatively consistent numbers and types of organisms

• Complete destruction of the ecosystem

• Immediate loss of all species

Tags

NGSS.MS-LS2-4

Which human activity does NOT directly lead to a decrease in biodiversity?

• Preservation of natural habitats

• Overexploitation

• Habitat destruction

• Introduction of invasive species

Tags

NGSS.HS-LS2-7