Succession — Unit test Answers

The biosphere is the only one of Earth’s systems that contains life.

Which of the following statements about positive feedback mechanisms is not true?

Which of the following is not a way in which carbon gases are introduced into the atmosphere?

Cycles are essential to all living organisms.

Plants in the rainforest contribute to precipitation there through transpiration.

What system includes oxygen, nitrogen, and ozone?

What system includes the living components of the Earth?

Which process forms sedimentary rock in the rock cycle after sediments accumulate and combine?

Compare positive and negative feedback mechanisms.

Which phrase best describes igneous rocks?

Study the image of this rock.

Explain how the biosphere interacts with the atmosphere.

Humans affect the carbon cycle in many ways through the use of fossil fuels, clear cutting of forests, and controlled burns. Which process can help counteract these human interactions?

Which of the following about the biosphere is true?

How do the plants in a rainforest contribute to the water cycle?

The Gaia hypothesis is an example of _______.

What effect do abiotic cycles have on ecosystems?

Which statement is an example of an observation a scientist would make to classify a rock?

Water exits the leaves of plants and enters the atmosphere. What is this process called?

Explain the role of organisms in the carbon cycle.