7th Grade Review

Which biome has the most biodiversity?

• tundra

• desert

• tropical rainforest

• grasslands

More biodiversity =

• more stability

• less stability

• more energy

• less energy

In a food chain what do the arrows represent?

• chemical energy

• mechanical energy

• thermal energy

• radiant energy

Which two are NOT food chains from this food web?

• grass --> grasshopper --> frog --> owl

• grass --> mouse --> owl --> hawk

• snake --> frog --> grasshopper --> grass

• grass --> grasshopper --> bird --> snake

Which of the following is an example of mechanical weathering?

• Acids from lichens

• Oxidation

• Carbonation

• Abrasion by water

What type of ecological succession is described by regrowth starting with bare rock followed by growth of lichens, grass, small trees then large trees?

• primary ecological succession

• secondary ecological succession

What type of ecological succession is described by regrowth starting with soil followed by growth of grass, small trees then large trees?

• primary ecological succession

• secondary ecological succession

What does this image represent?

• watershed

• aquifer

• biome

• ecoregion

What is an example of permeable rock?

• cement

• bedrock

• sand

• clay

Pollutants soak through permeable rock into groundwater.

• true

• false