Created by Terri Street Copyright 2000 u 1

Created by Terri Street Copyright, 2000

u 1, 000 u 500, 000 u 250, 000 u 125, 000 u 64, 000 u 32, 000 u 16, 000 u 8, 000 u 4, 000 u 2, 000 u 1, 000 u 500 u 300 u 200 u 100

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What molecules are the basic building block of life? u A. Carbon u B. Nitrogen u C. Oxygen u D. Hydrogen

u A. Carbon Back to Board

What is the term for a group of different species living in the same area? u A. Population u B. Organisms u C. Community u D. Ecosystem

C. Community Back to Board

What two factors make up an areas climate? u A. Rainfall and Sunlight u B. Temperature and rainfall u C. Temperature and soil u D. Climate and rainfall

B. Temperature and Rainfall Back to Board

Which of the following lists are examples of ABIOTIC factors? u A. Sun, Soil, Water u B. Sun, Soil, Fungus u C. A deer, Tree, Rocks u D. Fungus, Rocks, Soil

A. Sun, Soil, Water Back to Board

What would happen if a keystone species were removed from their ecosystem? u A. They would have u B. It would have a great impact, no great effect. but the other species would adapt. u C. Other populations u D. It would have a great impact would increase and the rest of the species would suffer .

D. It would have a great impact and other species would suffer Back to Board

What is the difference between a food chain and food web? u A. There is no difference. u C. Food chain consists of a single chain. Food web is a complex feeding network. u B. Food chain is a complex feeding network. Food web consists of single chain. u D. One shows trophic levels and the other does not.

u. C. Food chain consists of a single chain. Food web is a complex feeding network. Back to Board

Why are decomposers important for an ecosystem? u A. They can be omnivores. u B. They return nutrients to the environment. u C. They capture energy from the sun. u D. They are producers

u. B. They return nutrients to the environment. Back to Board

The oxygen and carbon cycle are similar in that u A. They both use fossil fuels u B. They use nitrogen fixation u C. They directly depend on photosynthesis u D. They both take place mostly under ground

u. C. They directly depend on photosynthesis Back to Board

What are the two ways that water enter the atmosphere? u A. Condensation and precipitation u C. Precipitation and transpiration u B. Precipitation and evaporation u D. Evaporation and transpiration

u. D. Transpiration and evaporation Back to Board

What happens during the process of nitrogen fixation? u A. Bacteria absorb ammonia u B. Bacteria change gaseous u C. Bacteria grow on plant u D. Bacteria change roots and in the soil nitrogen to ammonia to nitrate

u. B. Bacteria change gaseous nitrogen to ammonia Back to Board

Each level in the food chain contains less energy than one before because some energy u A. is lost as heat u B. is consumed by carnivores u C. is added to the system u D. incorporated into biomass

A. is lost as heat Back to Board

What are the two processes used by autotrophs to make their own sources of energy? u A. Photosynthesis and cellular respiration u B. Photosynthesis and chemosynthesis u C. Respiration and chemosynthesis u D. Chloroplast and mitochondria

u. B. Photosynthesis and chemosynthesis Back to Board

What are the trophic levels shown in energy, biomass, and number pyramids? u A. Biome, ecosystem, u B. photosynthesis u C. Producer; primary, u D. bacteria, community, population secondary, tertiary consumers and chemosynthesis fungus, consumers

u. C. . Producer; primary, secondary, tertiary consumers Back to Board

Which illustration shows the total dry mass of organisms in a given area? u A. Pyramid of numbers u B. Energy pyramid u C. Food web u D. Biomass pyramid