In the energy pyramid here, how much of the energy in each level gets lost as heat?

• 80%

• 90%

• 10%

• 20%

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

What is the correct order of changes during primary succession?

• Climax community, consumers, producers, pioneer species

• Soil, producers, consumers, climax community

• New rock, pioneer species, producers, consumers, climax community

What is the order that plants grow to repopulate the area in primary succession, such as a glacier receding or a volcano covering land with lava?

• Lichens → Shrubs → Grasses → Trees

• Lichens → tree → shrubs→Grasses

• Grasses → Lichens → Shrubs → Trees

• Lichens → Grasses → Shrubs → Trees

How much energy is lost as heat between the trophic level of the producers and the primary consumers?

• 10%

• 50%

• 70%

• 90%

Tags

NGSS.MS-LS2-3

What type of symbiosis?  Hummingbirds feed on nectar from flowers.  The flowers are pollinated by hummingbirds as they move from flower to flower.

• commensalism
• mutualism
• parasitism
• predation

Tags

NGSS.MS-LS2-2

Which of these are examples of combustion?

• Burning fossil fuels and trees

• Decomposition

• Diffusion

• Cellular respiration

Tags

NGSS.MS-PS1-5

Which of these is an abiotic factor?

• Competition between organisms for food

• Seasonal variations in precipitation and temperature

• Predators

• Parasites that affects the host

Tags

NGSS.MS-LS2-3

Why is nitrogen limited when the atmosphere is 78% nitrogen?

• It isn't limited

• Not many organisms can fix nitrogen, which means turn it into a useful form

• Nitrogen is so light that it floats above the rest of the gases in the atmosphere and most organisms can reach it

Tags

NGSS.MS-LS2-3

What would happen if all the producers in an ecosystem suddenly died?

• Consumers would increase

• Within a week, consumers would evolve the ability to do photosynthesis.

• Consumers would die, causing their numbers to decrease

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Uses energy from the sun to make sugars/food for the cell

• Mitochondria
• Chloroplast
• Vacuole
• Lysosome

Tags

NGSS.MS-LS1-6