Bony fish belong to Class Osteichthyes, while cartilaginous fish belong to Class Chondrichthyes. Bony fish have a bony skeleton, while cartilaginous fish have one composed mostly of cartilage. Bony fish have body coverings of scales, while cartilaginous fish are covered with dendritical projections (think shark skin).
Bony fish are found in fresh and salt water; cartilaginous fish are found only in salt water. Bony fish have gills covered by an operculum; cartilaginous fish have gill slits. Bony have no eyelids; the cartilaginous fish do. Bony fish have an air-filled swim bladder; cartilaginous fish have an oil-filled liver to keep them bouyant. Hope this helps! Whew!
Answer:
Normally, the iron group in myoglobin has an oxidation state of 2+. However, when oxygen binds to the iron, it gets oxidized to an oxidation state of 3+. This allows the oxygen that is binded to have a negative charge, which stabilizes it. Myoglobin's affinity for oxygen is higher than hemoglobin.
Answer:
CHICKENPOX
Explanation:
Varicella-zoster virus (VZV) causes chickenpox and herpes zoster (shingles).
CHICKENPOX follows initial exposure to the virus.
After the chickenpox runs its course, the virus retreats to nerve tissues near the spinal cord and brain, where it hides out.
Reactivation of the dormant virus results in the characteristic painful dermatomal rash of HERPES ZOSTER, which is often followed by pain in the distribution of the rash (postherpetic neuralgia).
Reactivation can be due to:-
1) A weakened immune system, which can wake the virus up
2) Cancer, HIV, or another disease that lower your body’s immunity
3) Being 50 or older
4) Being under a lot of stress
5) Past physical trauma
6) Taking long-term steroids or other medications that can weaken your immune system.
Answer:
the answer is setting or "worlds"