_______ Shells Aid Scientists in Two Ways: (1) Analysis of Their

question 200

Short Answer

_______ shells aid scientists in two ways: (1) analysis of their chemical makeup can be used to estimate global temperatures during the geological period in which the shells were made, and (2) diversity in their shapes can help scientists classify and date sedimentary rocks.

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Definitions:

Investment-Grade Bond

A bond with a high credit rating, indicating lower risk of default, making it an attractive investment option for conservative investors.

Junk Bond

A high-yield bond with a lower credit rating than investment-grade bonds, reflecting higher risk.

Annual Interest

Interest calculated or paid once per year on a loan or investment, based on the initial principal or on the amount outstanding.

Call Provision

A provision in a bond or similar fixed-income instrument that permits the issuer to pay off the principal ahead of its maturity date.