If influenza is a disease caused by a virus, then what is influenza caused by? Answer choices: - insects - A bacteria - smoking - Mold - Viruses - amoeba - Cold weather - chemicals
Viruses
------
If acavern is formed by carbon dioxide is in groundwater seeping through rock and dissolving limestone, then what forms caverns by seeping through rock and dissolving limestone? Answer choices: - pure oxygen - Something with a head, thorax, and abdomen - basic building blocks of life - carbon dioxide in groundwater - magma in groundwater - oxygen in groundwater - At the peak of a mountain - underground systems
carbon dioxide in groundwater
------
If deserts typically have clear weather, then what usually has clear weather? Answer choices: - hurricanes - mild - deserts - less water - autumn - swamps - rain forests - Winter
deserts
------
If migration influences the chances of a species surviving, then what influences the chances of a species surviving? Answer choices: - light energy - migration - plate tectonics - cell division - animals - temperature - environment - erosion
migration
------