Since the Peak of the Last Glaciation,global Temperatures Have Risen

question 1

Multiple Choice

Since the peak of the last glaciation,global temperatures have risen by about 8 degrees Celsius.Pollen records indicate:

• A) All flora have responded the same by expanding their range
• B) Some tree species have retreated their range
• C) Some tree species have expanded their range
• D) That trees were not expanding or contracting their range

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Definitions:

Algae

A diverse group of photosynthetic organisms, ranging from unicellular microalgae to large multicellular forms, that are typically found in aquatic environments.

Insect Larvae

are the juvenile form of insects following hatching from eggs, before metamorphosing into their adult forms.

Detritus Food Chain

A series of processes by which nutrients are recycled in an ecosystem, starting from organic waste and decomposing organisms to detritivores and then to their predators.

Decaying Matter

Organic material that is breaking down through the process of decomposition by microorganisms.