Tap the Settings app icon on your iPad to change your default email account. Tap Mail, Calendars, Contacts.. Scroll down to the Mail heading and tap Default Account.. Tap an account to select it as your default. Tap the Mail icon and then tap the New Message icon.
The fear of falling (FOF) is a natural fear and is typical of most humans and mammals, in varying degrees of extremity.
What cause's the fear  Your autonomic nervous system responding to the situation with a fight or flight reaction and all-or-nothing, adrenaline secretion. That is what cause's the FEAR FEELING. Why do Snakes cause you to have this reaction ? could be down to one or a combination of many psychological issues. The fight or flight reaction is inherent in us all, this is a survival mechanism ie when faced with danger or perceive we are faced with danger do we run from it or fight.