Answer true or false: the people in the northern hemisphere experience the seasons opposite of the people in the southern hemisphere

Laboratory experiments, observational field studies, and model-building are all examples of different forms of scientific investigations.  in what way do laboratory experiments primarily differ from other forms of scientific investigations?   a.  a laboratory experiment is the only accepted form of investigation within the scientific community.  b.  studies about how things behave in nature or studies involving very large objects are best answered through laboratory experiments.  c.  laboratory experiments involve the identification and control of variables.  d.  data can only be generated through laboratory experiments, not other forms of investigation.

What is the increase in density of a medium due to wave travel?

City installs recycling centers that take wood products. how might the recycling centers increase the availability of wood