Look carefully at the Image and answer the questions whi…

  Look carefully at the Image and answer the questions which follow     Right click on the button below to access the picture.       2.1 Is the Area marked with the letter A a ridge or a valley? (1) 2.2 Which two letters indicate steep slopes? (2) 2.3 FROM which direction would you come for the easiest climb to the peak of Bushy Mountain? (1) 2.4 Which two letters indicate gentle slopes? (2)

Among viruses, influenza viruses are uniquely poised to beco…

Among viruses, influenza viruses are uniquely poised to become suddenly, dangerously pathogenic (illness-causing) in humans.  This is because new strains (varieties) can easily emerge when a single cell in a host animal becomes simultaneously infected by multiple strains of flu.  This phenomenon is called …