1. What does destruction refer?

119. How many types of biotic components are?
A) 2
B) 5
C) 3
D) 7
E) 6
120. Choose the correct answer about residence time.
A) the input or output of material from a system
B) equation to determine how a system is changing over time
C) refers to the amount at the current time
D) gives feedback about processes
E) provides the average time that materials spent circulating in a pool
121. Which of the following are the organic components of an ecosystem?
A) calcium phosphate, lipids, and decomposers
B) producers, consumers and decomposers
C) carbon dioxide, water nitrogen, calcium phosphate
D) carbohydrates, proteins, lipids and water nitrogen
E) proteins, carbohydrates, lipids and amino acids
122. Processes move carbon from one form to another. Which of the following is a 
process?
A) Coal, oil and gas
B) Rock formation
C) Transpiration
D) Vegetation
E) Evaporation
123. What is example for sedimentary nutrient cycle?
A) Oxygen cycle
B) Carbon cycle
C) Sulfur cycle
D) Nitrogen cycle
E) Phosphorus cycle
124. Choose the correct functional units for ecosystems.

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A) exclusion principle, nutrient cycle, evolution
B) density population, natality factor, decomposition
C) mortality, productivity, nitrification
D) productivity, energy flow, decomposition, nutrient cycling
E) energy flow, mortality, evolution
125. What type of relationship is parasitism?
A) Living separately, no relationship between
B) Both species involved benefit from the relationship
C) One species benefits and the other is harmed
D) One species benefits and the other is not affected at all
E) Competing for the same food source