Hyper IgE syndrome is rare with less than 850 cases reported worldwide. It affects both boys and girls equally. It is due to genetic mutation in the gene on chromosome 4. In some cases, the genetic mutation has not been identified.
Report Abuse. The tropical zone is characterised by strongly monsoonal weather patterns, distinct wet and dry periods which are highly reliable, large quantities of rain and high intensity rainfall, high temperatures, and high rates of energy transformation.
You'll be able to walk from the tropical zone, where it's warm and humid, into a cooler Mediterranean area and then into the British climate. Life has changed little over the years, in the tropical zone where thousands of huge fruit bats hang in the trees by the seashore.