On a Hike in the Mountains, You Find a Stream

question 2

Multiple Choice

On a hike in the mountains, you find a stream with a rocky bottom. Many of the rocks are covered in algae. Which type of mollusc is most likely to be found living in this environment?

• A)A cephalopod because it can move quickly through the stream to avoid predators.
• B)A gastropod because it can use its radula to scrape the rocks for algae on which to feed.
• C)A bivalve because its sedentary life style allows it to remain still when currents flow over the rocks.

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Definitions:

Malaria

A life-threatening disease caused by parasites that are transmitted to humans through the bites of infected mosquitoes, prevalent in tropical and subtropical regions.

Flies

Insects of the order Diptera, known for their ability to fly and often considered pests because some can spread diseases.

Viral Disease

Diseases caused by viruses, microscopic infectious agents that can infect all types of life forms, from animals and plants to microorganisms, including bacteria and archaea.

Influenza

A highly contagious viral infection of the respiratory passages causing fever, severe aching, and often occurring in epidemics.