Which is the best way to prevent contracting the influenza virus? A taking antibiotics
B receiving a vaccination
C drinking lots of water
D treating water supplies

How many structures do prokaryotic cells have in common with the eukaryotic cells? a. 2b. 3c. 4d. 5

Is an official language in every north african country

What evidence supports geological processes changing the surface of the earth? cutting down forests creates a decrease of habitats. tectonic plates uplift the rocky crust of earth to form mountains. competition in ecosystems creates a decrease in diversity. pollution runoff contaminates a lake.