Why Are Lichens a Good Indicator of Environmental Quality

question 84

Multiple Choice

Why are lichens a good indicator of environmental quality?

• A) They cannot absorb toxins.
• B) If the air is polluted they cannot get enough sunlight for photosynthesis.
• C) They cannot excrete absorbed toxins.
• D) If the soil is polluted they cannot produce roots.
• E) Toxins inhibit their reproduction.

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Definitions:

Single-case Experiments

An experimental research design focusing on the effects of an intervention on a single subject or case, allowing for detailed observation and analysis.

Dependent Variable

The outcome variable that researchers are interested in explaining or predicting, often influenced by the independent variable.

Multiple Baseline Design

Observing behavior before and after a manipulation under multiple circumstances (across different individuals, different behaviors, or different settings).

Reversal of Treatment

A procedure in single-subject research where an intervention is removed to study its effects on the target behavior or condition.