If a Meteor Impact or Volcanic Eruption Injected a Lot

question 14

Multiple Choice

If a meteor impact or volcanic eruption injected a lot of dust into the atmosphere and reduced the sunlight reaching Earth's surface by 70% for one year, which of the following marine communities most likely would be least affected?

• A) deep-sea vent
• B) coral reef
• C) intertidal
• D) pelagic
• E) estuary

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Definitions:

Compound Interest

The calculation of interest on the initial principal, which also includes all of the accumulated interest from previous periods on a deposit or loan.

Present Value

The current worth of a future sum of money or stream of cash flows, given a specified rate of return, reflecting the time value of money.

Earnings Rate

The rate at which an investment or savings account generates income over a specific period of time.

Net Present Value

A financial metric that estimates the profitability of investments by calculating the difference between the present value of cash inflows and outflows over a period of time.