Extensive Tree Ring Research Indicates That the 22-Year Sunspot Cycle

question 93

Multiple Choice

Extensive tree ring research indicates that the 22-year sunspot cycle may be related to:

• A)warm periods in northern Europe.
• B)rainy episodes in North Africa.
• C)drought in the western United States.
• D)El Niño.

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Definitions:

Tribes

Social groups existing before the development of, or outside of, states, often consisting of families or communities linked by social, economic, religious, or blood ties.

Political Organization

Structures and systems that societies develop to make and implement decisions, often including governments, parties, and other entities that regulate social order.

Oldest Form

The earliest version or manifestation of something, often referring to cultural practices, languages, or biological species.

Impose Will

The act of enforcing one's own desires or decisions upon another individual or group, often without their consent.