Mr. Schafer's BIO Unit 11 Review 2021-22

Abiotic and Biotic

100

Name one biotic factor in a pond ecosystem.

Fish, frog, algae, grass, anything living

200

Name one abiotic factor in a pond ecosystem.

Water, air, sunlight, rocks, mud, etc.

300

Which of the following is a BIOTIC factor that might affect the life of a water dwelling organism?

Temperature of the water

Speed of the water current

Toxins (pollutants) in the water

Amount of bacteria in the water

Amount of bacteria in the water (Bacteria are living.)

400

An ecologist who studies how several different populations of species in an area interact among each other is interested in the level of organization called a(n)

Community

500

Which biotic factor usually doesn't get labeled in a food web and WHY?

Decomposers because they can feed from any organism at any trophic level. (There would be too many arrows.)

Trophic Levels

100

Arrows in a food chain/web represent _____.

The flow of energy (not "What eats what")

200

If a secondary consumer is removed from a food web, what affect would that have on the primary consumers AND the producers?

The population of primary consumers would increase causing the population of producers to decrease (eventually the population primary consumers would decrease as well after they run out of food.)

300

Carbon fixation is an important process in the carbon cycle. Carbon fixation is the conversion of carbon dioxide into organic compounds such as glucose. Name an organism that can fix carbon.

Any autotroph (ex. plants)

400

Considering an energy pyramid, what reason explains why only 10% of the total energy in a trophic level is passed on to the next level?

90% of the energy gets used by the organism for performing normal life functions.

500

In one attempt, create a food chain that has a producer, primary consumer, secondary consumer, and tertiary consumer.

Ex: plant -> grasshopper -> frog -> fox

The Carbon Cycle

100

What effect does an increase in carbon dioxide levels in the atmosphere have on global temperature?

With more CO₂ in the air, temperatures increase.

200

What is the greenhouse effect?

When the gases in our atmosphere trap some of the sun's radiation and block it from escaping our planet

300

What is the difference between weather and climate?

(NOT just short-term and long-term)

Weather is short cycles of wind, precipitation, and temperature whereas climate is long term patterns over 30+ years of wind, precipitation, and temperature.

400

Identify one factor that adds CO₂ to the atmosphere and one factor that removes CO₂ from the atmosphere.

Adds - Combustion, factory emissions, burning, fossil fuel use, cellular respiration

Removes - Mainly just photosynthesis

500

What major effect does human activity have on the carbon cycle?

They put carbon dioxide into the air faster than it can be removed.