The ability of some viruses to remain inactive (latent) for a period of time is exemplified bya. kaposi's sarcoma, which causes a skin cancer in people with aids, but rarely in those not infected by hivb. myasthenia gravis, an autoimmune disease that blocks muscle contraction from time to timec. the virus that causes a form of the common cold, which recurs in patients many time in their livesd. influenza, a particular strain of which returns every 10-20 yearse. herpes simplex viruses (oral or genital) whose reproduction is triggered by physiological or emotional stress in the host

The rate at which molecules water and oxygen can enter a cell is determined by the-

On a recent expedition to a remote region of northern canada, scientists uncovered skeletal remains from about 100,000 years ago. surprisingly, all the skeletal remains, which included many species from differing biological families and spanned about two thousand years, showed evidence of experiencing temperatures in excess of 1000 degrees fahrenheit (or 538 degrees celsius). which of the following, if true, best explains the apparent paradox between the cold environment and the evidence of the bones experiencing hot temperatures? (a) chemical changes that naturally occur during the process of decay in only one north canadian species produce the same evidence of the species' skeletons being exposed to hot temperatures as the expedition scientists found. (b) a little over 103,000 years ago, a large fire is known to have occurred in northern canada. (c) strong evidence exists that as early as 70,000 years ago, homo sapiens around the world relied heavily on fire to cook animals. (d) in the same expedition and in roughly the same layer of excavation, scientists found rudimentary wood cutting and hunting tools used by early humans.

Which is not a type of symmetry? a. asymmetryb. radial symmetryc. bilateral symmetryd. lateral symmetry