Oxygenic Photosynthesis Is Made Possible by the Accumulation of Oxygen

question 135

Multiple Choice

Oxygenic photosynthesis is made possible by the accumulation of oxygen in Earth's atmosphere and oceans. The primary producers of oxygen since 800 million years ago and those that power the modern carbon cycle are mostly:

• A)cyanobacteria.
• B)anoxygenic phototrophs.
• C)algae and plants.
• D)purple bacteria.

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Definitions:

Price Level

A collective average of prices for goods and services across the board in the economy.

Real Wages

The purchasing power of wages or salaries, adjusted for inflation, reflecting the actual goods and services that can be bought.

Real Annual Wage

The annual income of an individual adjusted for inflation, providing a more accurate measure of purchasing power over time compared to nominal wages.