Which of these is a biotic component of an ecosystem?
Water availability
Amount of sunlight
Number of plants
Which of these processes is NOT part of the carbon cycle?
Respiration
Precipitation
Photosynthesis
Which of these methods could increase the rate of decomposition?
Decreasing temperature
Decreasing water content
Increasing water content
Which method would kill microorganisms?
Boiling
Freezing
Cooling
Which of these is the correct order of events for the water cycle when water from the ocean forms clouds?
Evaporation, cooling, condensation
Cooling, evaporation, condensation
Condensation, evaporation, cooling
What is decomposition?
The breaking down of dead matter
The presence of microorganisms
Microorganisms that can break down dead matter
When will increasing the oxygen availability increase the rate of decomposition?
When anaerobic microorganism decomposers are present
When no microorganism decomposers are present
When aerobic microorganism decomposers are present
Which is the fastest rate of decomposition?
100 g per day
1,000 g per day
500 g per day
What is the rate of decomposition for the reaction shown in the graph to the nearest whole number?
121 g per day
1 g per day
850 g per day
If the temperature is too high, the rate of decomposition stops. Why?
The enzymes in the decomposing microorganisms speed up
The enzymes in the decomposing microorganisms are denatured
The enzymes in the decomposing microorganisms are killed