bio test quizizz ch 13

An ecologist counts weeds to monitor their populations. Which of the following best describes the ecologist’s methods?

• modeling
• observation
• experimentation
• hypothesizing

Which type of organism returns nutrients from dead/decaying material to the soil?

• herbivores.
• carnivores.
• omnivores.
• detritivores.

What do all the biotic and abiotic factors in a given area make up?

• a habitat
• a community
• an ecosystem
• a population

Which process is part of the hydrologic cycle?

• nitrification
• evaporation
• decomposition
• ammonification

Which of the following provide most of the energy in ecosystems?

• keystone species
• carnivores
• generalists
• producers

Almost all autotrophs get their energy from

• sunlight.
• hydrothermal pools.
• decaying matter.
• producers.

An organism that has an unusually large effect on an ecosystem is called a(n)

• keystone species.
• omnivore.
• biotic factor.
• heterotroph.

A group of gray wolves living in Minnesota is an example of

• a community.
• a population.
• a biome.
• an ecosystem.

Which two processes in the carbon cycle release CO2 into the atmosphere?

• photosynthesis and decay
• combustion and respiration
• combustion and the formation of fossil fuels
• photosynthesis and respiration

Which of the following can be both primary and secondary consumers?

• herbivores
• carnivores
• omnivores
• detritivores