5 L 3 3

Label the following diagram

c

d

e

f

b

a

Deoxygenated blood

Oxygenated blood

Alveolus

Brionchiole

RBC out

RBC in

Tags

NGSS.MS-LS1-3

There are more carbon dioxide molecules located into the ​ (a)   while there are more oxygen molecules located in the ​ (b)   . During gas exchange, CO₂ and O₂ molecules will move from a ​ (c)   concentration to a ​ (d)   concentration.

• capillaries

• alveoli

• high

• low

Tags

NGSS.MS-LS1-3

Which statement BEST explains why only 10% of the energy produced is transferred to the next trophic level?

• The energy is lost as heat to the environment.

• Only a small percentage of energy is needed at higher levels.

• Amount of energy remains the same but in different forms.

• All the energy is used up by primary producers.

Tags

NGSS.MS-LS2-3

In which process is nitrogen from the air put into a form that plants can use?

• nitrogen fixation

• nitrification

• denitrification

• nitrogen saturation

Which factor BEST explains why biomass decreases as trophic level increases in a food pyramid?

• Some of the energy is converted to heat.

• The survival rate of organisms gradually decreases.

• The availability of space decreases as feeding levels increase.

• Toxic chemicals get concentrated as they move up the food web.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which mechanism helps carbon to cycle from the atmosphere to living organisms?

• photosynthesis

• tissue decomposition

• cellular respiration

• transpiration

Tags

NGSS.MS-LS1-6

Consider this food web: Where is the largest amount of energy found in this food web?

• grass

• hawk

• mouse

• grasshopper

Tags

NGSS.MS-LS2-3

The diagram shows a food web for an ocean ecosystem. How would an increasing shark population most likely affect this ecosystem?

• The octopus population would decrease.

• The algae population would decrease.

• The limpet population would decrease.

• The seagull population would decrease.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

Look at the picture of the water cycle. Which process is occurring at the arrow labeled 4?

• precipitation

• evaporation

• transpiration

• condensation

Tags

NGSS.MS-ESS2-4

Matter cycles between the environment and living organisms in a complex web of interactions. Which organisms provide the important link in Box A from dead organic matter to matter from the environment?

• decomposers

• autotrophs

• parasites

• photosynthesizers

Tags

NGSS.MS-LS2-3