Which of the following best describes the meaning of the term groundwater contamination? chemicals and minerals seeping into the underground water table

damage done to the soil by mineral buildup from irrigation

high acid levels found in undrained agricultural lands, caused by wet conditions

silt infiltration of a community’s drinking water, as happens during a flood

The diagram shows a fossil of an ancient whale skull and a skull of a present-day whale. the ancient whale is extinct and is believed to be an ancestor of the present-day whale. what do these skulls most likely show that supports darwin’s theory of evolution? all populations can adapt and survive. only some organisms have a common ancestor. populations change slowly over time. populations rapidly become extinct.

What organs comprise the respiratory system of a bird

What class of levers is shown in this image?