Any activity is governed by principles or natural laws. Some are obvious—skydiving, obviously, is governed by gravity. Flying is also subject to gravity, as well as wind and air patterns. ...
Register with an email
address.
Already have an account? Log
in here.
Register
Log in
This website uses cookies. By continuing to use this website you are giving consent to cookies being used. For information on cookies and how you can disable them, visit our privacy and cookie policy.