Habitats

Four students are asked to give an example of ways that animals can change their environment. The table shows their answers.
Jack - A herd of cows overgraze on a piece of  land leading to soil erosion.
Tina - Beavers build dams on streams and block the flow of water.
Louis - Cattle drop dung on grazing ground and make the soil fertile.
Kathy - Eagles build nests o the top of tall trees to keep their eggs safe.
Who has given a wrong example?

• Jack
• Kathy
• Louis
• Tina

The boxes in the diagram represent organisms in a food chain.
 
  1>2>3>4

Which species would best  represent organism 4 in the food chain diagram?

• Hawk
• Frog
• Grass
• Crickett

Look at the food chain below.
Sun > Grass > Mouse > Owl
Which way does energy flow in the food chain?

• from the grass to the Sun
• from the owl to the mouse
• from the mouse to the grass
• from grass to the mouse

A shell fossil was found in a mountain range. What does this mean about the area in which it was found?

• The mountains were once a very warm climate.
• The mountains were once covered by ice.
• The mountains were once covered by seas or oceans.
• The mountains were once a very cold and dry climate.

Grizzly bears will eat a large amount of food in late summer and early fall and then they move into a cave or den to sleep during the cold winter.
What is this behavior adaption called?

• camouflage
• hibernation
• migration
• mimicry

Below is an example of a food chain.

Sun → black walnut tree → squirrel → raccoon → bobcat

Which way does the energy flow?

• from the bobcat to the squirrel
• from the raccoon to the black walnut tree
• from the black walnut tree to the raccoon
• from the squirrel to the Sun

A porcupine has long spines called quills.
What is the function of these quills?

• camouflage
• defense
• food-gathering
• locomotion

Some frog species will bury themselves in mud if the environment becomes very dry. The frogs enter into a type of hibernation. Which would be the most likely signal for the frogs to emerge from the mud?

• a decrease in daylight hours
• an increase in air temperature
• an increase in precipitation
• a decrease in air pressure

Below is an example of a food chain.

Sun → sea weed → lobster → octopus → shark

Which way does the energy flow?

• from the lobster to the seaweed
• from the seaweed to the lobster
• from the shark to the octopus
• from the octopus to the lobster

While hiking in the Blue Ridge Mountains, a scientist discovered this starfish fossil.
What did this tell the scientist about the area in which he found the fossil?

• The Blue Ridge Mountains were once covered by the ocean.
• The Blue Ridge Mountains were once a desert region.
• The Blue Ridge Mountains were once in a tropical warm climate.
• The Blue Ridge Mountains were once covered by ice.