1. Comets are cosmic snowballs of frozen rock and dust that orbit the Sun. When frozen, they are the
size of a small town. When a comet's orbit brings it close to the Sun, it heats up and spews dust and gases into a
giant glowing head larger than most planets. The dust and gases form a
that stretches away from the
for millions of miles.
2. How long does it take the Comet Swift-Tuttle to orbit the Sun?
3. Halley's comet takes about
years to orbit the Sun. The next time Earth will be able to see it will be in
the year
Each time that Halley returns to the inner solar system its nucleus sprays ice and rock into
space. This debris stream results in two weak meteor showers each year, the Eta Aquarids in May and the Orionids in
October.

Ms. w, a 21-year-old woman, came into a clinic after suffering a deep laceration on her foot while walking barefoot around her yard. the wound was cleaned, sutured, and bandaged, and she was released to return home after receiving tetanus antitoxoid. within 72 hours, the wound area was red and swollen, the suture line was dark in color, and it was accompanied by severe throbbing pain. ms. w had a high fever, her heart felt like it was racing, and she was finding it hard to concentraten even on simple tasks. she returned to the clinic and was immediately taken to the hospital. following lab tests, a diagnosis of acute necrotizing fasciitis was made. discussion questions 1. explain why ms. w. received a tetanus antitoxoid before leaving the hospital. (see chapters 3 and 4, infection and passive immunity.) 2. explain how acute necrotizing fasciitis developed in this case and the pathophysiology involved. (see acute necrotizing fasciitis.) 3. what is the potential outcome for ms. w if antibiotic drugs do not reduce the infection quickly?

Can i get the answer to this problem?

Why do you suppose the structural polysaccharide cellulose does not contain branches?