Ecosystems and Environment chapter 2

Which organism is a producer?

• fish

• phytoplankton

• snail

• mold

The major role of decomposers is __________________.

• to compete for energy

• to control populations

• to recycle energy and materials

• to provide a source of energy

What adaption would help a plant survive in moving water?

• large leaves

• sweet scent

• red pigment

• long roots

________________ is not an aquatic ecosystem.

• aquifer

• estuary

• saltwater

• freshwater

Biodiversity in an ecosystem indicates____________________.

• the identity of organisms

• the ecosystems ability to survive

• the location of the ecosystem

• the size of the ecosystem

Natural eutrophication can cause __________________________.

• non-native species to thrive

• a glacier to retreat

• rocks to breakdown into soil

• a pond to become a meadow

Adding chemical fertilizers to soil may cause ____________________ to occur in water.

• eutrophication

• nutrient decrease

• biodiversity

• no change

Resource depletion an occur when _____________.

• fertilizers run off into water

• gases in the air produce acids

• more trees are cut down than are replanted

• ships are sunk to replace natural reefs

Resource depletion, pollution, and habitat loss are caused by ______________.

• human activities

• acid rain

• eutrophication

• native species

A food chain represents ________________________________.

• change over time

• energy transfer

• organism movement

• increase in size