After a Large Volcanic Eruption, a Cloud Dense with Volcanic

question 142

Multiple Choice

After a large volcanic eruption, a cloud dense with volcanic ash and pollution can stretch over a sizable portion of the Atlantic Ocean.Select the sentence that best describes the effect this event would be likely to have on phytoplankton and other oceanic wildlife.

• A) Phytoplankton populations would diminish because of limited light penetrance, resulting in population declines in species dependent on phytoplankton as a food source.
• B) Phytoplankton populations would thrive with the additional nutrients provided by the volcanic ash, resulting in population increases in species dependent on phytoplankton as a food source.
• C) Phytoplankton populations would remain unchanged as a result of this type of natural disaster.
• D) The species distribution in phytoplankton populations would change, shifting toward species that are able to make sugars using photosynthesis.
• E) There would be a dramatic decrease in atmospheric CO₂ as phytoplankton converted the limited supply into sugars using photosynthesis.

---

Definitions:

Leisure

Time utilized for enjoyment and relaxation, free from the obligations of work or serious responsibilities.

Substitution Effect

The change in demand for a good that results from a change in price, making the good more or less expensive relative to other goods.

Price Change

An alteration in the cost of a good or service, which can affect demand and supply dynamics in the market.

Substitution Effect

The change in consumption patterns due to a change in the prices of goods, leading consumers to replace more expensive items with cheaper alternatives.