2. Which of the following situation describes without the presence of oxygen? A. digestion of food
C. sliced apple turned brown
B. rusting of metals
D. stored food in a tight container

What is a common risk associated with alcohol?

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.

What’s the first step in handling stress? list eight strategies for managing stress. what are some physical symptoms of stress?