Evolution is often described as a slow, unobservable process. However, viruses continue to evolve rapidly. What best explains how the influenza virus evolves rapidly? A) Influenza viruses recombine with more pathogenic bacteria to produce new diseases. B) Influenza viruses target only cells that are resistant to detection by the immune system. C) Influenza viruses with mutations to evade host immune systems replicate more frequently than those that without the mutations. D) Influenza viruses combine with the human genome to silence genes of the immune system that can target influenza-infected cells.

Water at room temperature of 20.0°c is poured into an aluminum cylinder which has graduation markings etched on the inside. the reading in the graduations is 300.0 cc. the cylinder with the water in it is then immersed in a constant temperature bath at a temperature of 100°c. what is the reading for the level of water on the graduations of the cylinder after the water and the cylinder reach thermal equilibrium with the bath? the volume coefficient of expansion of water is 2.07 x 10^-4 k-1, and the linear coefficient of expansion of aluminum is 23.0 x 10^-6 k-1. a) 305.0 cc b) 304.0 cc c) 303.5 cc d) 303.3 cc e) 304.5 cc

Use the information presented in the graph to answer the questions. which segments show acceleration? which segment indicates that the object is slowing down? what is the velocity of segment b? what is the acceleration of segment b?

What does si stand for,when referring to a system of measurement