How Did the Ecology of the African Tropics Change About

question 8

Multiple Choice

How did the ecology of the African tropics change about 6 million years ago?

• A) This area experienced warming temperatures and regular rainfall patterns, resulting in a shift to tropical forest.
• B) This area experienced warming temperatures and significantly reduced rainfall, resulting in the formation of the Sahara Desert.
• C) This area experienced warming temperatures and a significant increase in rainfall, resulting in a shift to swampland.
• D) This area experienced cooling temperatures and seasonal patterns of rainfall, resulting in a shift to savanna.

Explain the impact of human activities on net primary productivity (NPP) in aquatic and terrestrial ecosystems.

Identify factors that determine net primary productivity in different biomes.

Describe trophic efficiency and the factors influencing the number of trophic levels in ecosystems.

Discuss the role of nutrients in limiting primary production in different environments.

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Definitions:

Watchdog Error

An error condition triggered by a watchdog timer, which monitors system or process activity to ensure it is operating within expected norms, indicating malfunctions or failures.

Scan Time

The time required to read all inputs, execute the control program, and update local and remote input and output statuses. Scan time is, in effect, the time required to activate an output controlled by programmed logic.

Input Module

A component of a PLC or control system responsible for receiving and processing signals from external devices or sensors.