The Primary Change in the Earth's Environment That Allowed More

question 17

Multiple Choice

The primary change in the Earth's environment that allowed more complex life forms to come into being was:

• A) the addition of sufficient dissolved mineral and nutrients in the oceans.
• B) the development of hospitable climatic belts.
• C) a change in the Sun's emission of ultraviolet radiation.
• D) the development of a protective atmosphere.

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Definitions:

Rhizomes

Underground stems that grow horizontally, producing roots and shoots at intervals to enable some plants to spread.

Difference

A distinguishing factor or quality that sets one thing apart from others, often utilized to compare and contrast entities or concepts.

Terminal Bud

A growth located at the tip of a stem or branch, where new leaves and flowers can develop.

Zone of Cell Division

An area in plant roots or shoots where cells are actively dividing, contributing to growth in length.