To raise an arm upward, the muscle on one side of it contracts.

What happens to the muscle on the opposite side of the arm?
contracts
relaxes
both contracts and relaxes
neither contracts nor relaxes

An _ exposure is a repeated or prolonged exposure(over months or years) that may bring about slowly developing symptoms.

What is the main structural difference between enveloped and nonenveloped viruses? a) enveloped viruses have their genetic material enclosed by a layer made only of protein.b) nonenveloped viruses have only a phospholipid membrane, while enveloped viruses have two membranes, the other one being a protein capsid.c) enveloped viruses have a phospholipid membrane outside their capsid, whereas nonenveloped viruses do not have a phospholipid membrane.d) both types of viruses have a capsid and phospholipid membrane; but in the nonenveloped virus the genetic material is between these two membranes, while in the enveloped virus the genetic material is inside both membranes.

Match the terms to their correct definitions. 1. commuting flexibility in when you work 2. telecommuting traveling to get to work 3. flextime a form of flexplace that allows people to use technology to do their work away from the office 4. flexplace flexibility in where you work