Science 7 Year End Review - Unit A

A leaf receives light from the sun.

A worm shelters under a rock.

A deer drinks water from a stream.

An ox and oxbird form a mutualistic relationship.

A wolf eats a hare.

Beetles infest a tree for shelter.

Bees pollinate flowers.

Suckerfish attach to the bottom of sharks.

Wind power

Natural gas

Solar power

Biofuel

They introduce foreign competition, reducing the available resources to native organisms.

They can remove the nutrients from soil, making it more difficult for plants to get what they need.

They can sometimes prey on native species with no predators hunting them.

All of the above.

Soil

Sunlight

Grass

Rocks

Bears

There are no decomposers in this food web.

There are 3 producers listed.

The hawk is ONLY a quaternary consumer.

The arrows in this food web are pointing the wrong direction.

The frog population would increase.

The owl population would increase.

The mouse population would decrease.

The snake population would increase.

Collection

Precipitation

Evaporation

Condensation

Cellular respiration

Respiration

Photosynthesis

Nitrogen Fixation

A disease that kills grasshoppers.

A disease that wipes out rabbits

A disease that kills grass.

A disease that kills foxes.

A food chain is more complex than a food web.

In a food web, an organism can never be more than one type of consumer.

In a food chain, an organism can be both a producer and a primary consumer.

In both food chains and food webs the originating source of energy is the same.

Primary succession

Secondary succession

Tertiary succession

None of the above

The blue line

The red line

Both the blue line and the red line.

Neither the blue or the red line.