The Sun is the source of all energy within an ecosystem. Plants depend on light from the sun in order to perform the process of photosynthesis. Sunlight is an example of what type of factor?

• BIOTIC

• ABIOTIC

Is temperature a biotic or abiotic factor?

• biotic

• abiotic

What are the abiotic factors in this image?

• water, sunlight, dirt, air

• birds, trees, and sunlight

• water, trees, and birds

What does the word root 'bio-' mean?

• living

• dead

• science

• study

True or False:
The prefix a means not. 

• True
• False

Which of the following is not an abiotic factor that limits the organisms in an ecosystem?

• drought
• soil-nutrients
• water
• human activity

Mineralization affects the _________ diversity of a biome.

• abiotic

• biomass

• Neither

Which of the following two factors can be related to the atmospheric composition of a biome?

• The acidity and absorption of energy.

• The absorption and reflection of heat.

• The over-mineralization and under-mineralization of soil.

• The density and acidity of water.

Acidity of water has a direct impact on the _________ of the water.

• Salinity

• Aridness

• Abundance

• Absorption.

Environments that are overly arid tend to have _______ biomass diversity.

• more

• less