Support for the Succession Mechanism of Tolerance Is Found in Research

question 18

Multiple Choice

Support for the succession mechanism of tolerance is found in research on plant communities that shows

• A)that plants release toxins that prevent other species from establishing.
• B)succession is random and cannot be predicted by existing species.
• C)climax communities rarely form.
• D)succession is determined largely by species that exist in the ground as seeds or old roots.
• E)competition-tolerant species colonize first.

---

Definitions:

Preset Value

A preset value is an established parameter or threshold within a system, device, or application that triggers a specific action or response when reached.

Sequencer Instruction

A programming command used in PLCs to execute a series of stored steps or operations in a sequential manner.

Output Word

A data structure or unit in digital electronics and computing used to represent output values or states.