The waste product of photosynthesis is:
nitrogen
oxygen
glucose
carbon dioxide

Which of the following occurs after a natural or unnatural disturbance in an ecosystem

The influenza virus cause the flu, but not other diseases. why?

Some mining processes involve removal of large areas of earths surface in the mined region this practice causes severe environmental damage by allowing which natural process to accelerate in the affected areas? a.precipitation b.erosion c.migration d.condensation