The K-T (Cretaceous-Tertiary)extinction Boundary Is Marked in Many Sites by a Thin,distinctive

question 17

Short Answer

The K-T (Cretaceous-Tertiary)extinction boundary is marked in many sites by a thin,distinctive _____ layer containing soot and large amounts of iridium.

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Definitions:

Local Spending

Expenditures by individuals, businesses, or government within a specific geographic area, contributing to the local economy.

Gains From Trade

The benefits that individuals, companies, or countries experience as a result of engaging in voluntary trade.

Efficiency

The optimal use of resources to achieve the desired output with minimum waste or expense.

Community

A group of people living in the same place or having a particular characteristic in common.