Five students get sick with a cold after a weekend field trip to theaquarium with their classmates. Which best explains why these studentsbecame sick?

Atool suspected of being used at a crime scene should be tried out in a tool mark to see if it fits

The graph shows the amount of global warming happening in different ecosystems. which populations of organisms will likely decline the most as a result of climate change, and why? a.coral reefs because of the loss of the symbiotic algae living within their bodies b.penguin populations because the fish they eat will move into warmer waters c.mountain-dwelling birds because rising sea levels will relocate their food sources d.large cats in the rainforest because of decreased habitat loss for their prey

In which energy level are valence electrons located?