16. Whales and dolphins both use sound underwater. Dolphins use high-frequency
sounds to locate objects. These waves can
travel a few hundred meters. Whales use
low-frequency sounds to communicate. These
waves can travel hundreds of kilometers. Why
might these sounds travel different distances?

Ascientist wants to know how individual lions within a pride interact with each other in their own environment. to do this, the scientist sedates and tags all of the lions within a pride. then, he places several remotely-controlled video cameras near the lions' den and performs an observational field study. he collects continuous video footage over the span of one year, analyzes the video, and then forms conclusions based on his observations.

The molar mass of iron(fe) is 55.8 g/mol. what is the mass in grams of 2.25 moles of iron?

Show how to convert the temperature 84.7° c to kelvin. include all steps and label the final answer