NGSS.MS-LS2-3

How much energy is available to be passed on to the next trophic level in an ecosystem?

• 100%
• 10%
• 50%
• 75%

Tags

NGSS.MS-LS2-3

A scientist collected data in a certain field which is shown in the diagram.  He observed that these numbers remained stable over a period of time. He then introduced a large omnivore into the ecosystem. Assuming that the large omnivore was placed here by the scientist, which result can best be inferred?

• The birds would not be affected because they are at the top of the pyramid
• A large omnivore would consume energy at every trophic level, reducing the amount of energy available to each level above the producers
• A large omnivore would consume energy only at the first two trophic levels and the 3rd and 4th levels would be unaffected  
• The omnivore had little affect because the birds would eat the omnivore’s offspring and the omnivore would die off

Tags

NGSS.MS-LS2-3

Energy increases as you move up the food pyramid (from bottom to top).

• True 
• False

Tags

NGSS.MS-LS2-3

Nonliving things found in an ecosystem.

• factories
• factor trees
• biotic factors
• abiotic factors

Tags

NGSS.MS-LS2-3

Dead matter and waste would pile up without which type of organism?

• decomposer
• consumer
• producer

Tags

NGSS.MS-LS2-3

A student builds a model to show how pollutants move through an ecosystem. In plastic tub, the student places a layer of small marbles, covers it with a thick cloth, and then adds a layer of sand. The student then sprinkles red powdered paint on top of the soil. When the student sprays water onto the model, red color appears in the cloth and in the water in the layer of marbles. Which part of the model represents pollutants introduced by humans?

• The marbles

• The thick cloth

• Red powdered paint

• Layer of sand

Tags

NGSS.MS-LS2-3

Lizards and cacti are biotic factors in a desert ecosystem that would rely on which abiotic factors?

• insects and sun

• water and insects

• snakes and temperature

• water and soil

Tags

NGSS.MS-LS2-3

________________________ is part of the air, rocks, soil, and all living things.

• Nitrogen

• Carbon

• Water

• Silver

Tags

NGSS.MS-LS2-3

Biomes have which of the following in common? (You can choose more than one)

• Plants

• Animals

• Climate

• Terrain

Tags

NGSS.MS-LS2-3

energy

• the ability to make things move or change
• the chemical reaction between oxygen and glucose that releases energy into cells
• the body’s use of molecules for energy and growth
• a claim supported by evidence

Tags

NGSS.MS-LS2-3