There Is Distinctive Lack of Trees in the Tundra Because

question 60

Multiple Choice

There is distinctive lack of trees in the tundra because the

• A) atmosphere lacks enough oxygen.
• B) there is no soil.
• C) there are too many earthquakes.
• D) subsoil is permanently frozen.
• E) shrubs outcompete the trees.

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Definitions:

Tiktaalik

An extinct genus of fish-like tetrapods that represents an early stage of the transition from fish to tetrapods.

Eusthenopteron

An extinct prehistoric fish known for its significance in the study of vertebrate evolution, especially the transition from water to land animals.

Wrist Bones

A collection of eight small bones called carpal bones that support the structure and motion of the wrist.

Homoplasious

A term similar to homoplasic, describing characteristics that arise independently in different lineages, not from a common ancestor.