If injury of the lungs can be caused by a bacterial infection, then injury of the lungs can be caused by what? Answer choices: - running - wind and erosion - breathing - cigarettes - Pesticides - bacterial infection - smoking cigarettes - foggy air
bacterial infection

If sand dunes are formed by wind erosion, then what can be caused by wind erosion? Answer choices: - Water expanding - Pollution - Sand dunes - an object - deforestation - flooding - patch reefs - detritus
Sand dunes

If aprocess that can occur in-vitro takes place inside the female organism, then aprocess that can occur in-vitro takes place inside the what type of organism? Answer choices: - dead - female - male - potatoes - plants - ferns - orchids - infertile
female