Why do scientists consider hiv to be an emerging virus? a) hiv infected humans long before the 1980s, but it has now mutated to a more deadly form. b) hiv mutates rapidly making the virus very different from hiv in the early 1980s. c) hiv suddenly became apparent and widespread in the 1980s. d) hiv is now starting to cause diseases other than aids, such as rare types of cancers and pneumonias.

In 1996 california legalized the medical use of marijuana, even though it was still illegal under federal law. californians angel raich and diane monson used medical marijuana that they grew on their own property. when federal agents destroyed their plants, monson and raich sued, claiming, among other things, that the commerce clause did not permit the federal government to regulate activities that took place in their back yards and homes. the federal government argued that since consuming locally-grown marijuana for medical purposes affects the interstate market for marijuana, the federal government may regulate—and prohibit—such consumption. whose argument should prevail?

Which term defines one's age as measured in years? chronological age biological age social age mental age

How will health most likely be affected if you follow the recommended guidelines for sleep rest and physical activity