Please capitalize where necessary: sleeping sickness causes millions of deaths in africa.
A: Sleeping sickness causes millions of deaths in Africa.

Please capitalize where necessary: players are not allowed to have opened an account at bwin sportsbook in the past and the deposit needs to be wagered at least once.
A: Players are not allowed to have opened an account at Bwin Sportsbook in the past and the deposit needs to be wagered at least once.

Please capitalize where necessary: the high prolifacy of the booroola merino is due to the action of a single gene. booroola actually refers to a gene called the b gene (also called f for fecundity).
A: The high prolifacy of the Booroola Merino is due to the action of a single gene. Booroola actually refers to a gene called the B gene (also called F for fecundity).

Please capitalize where necessary: during your first 4 weeks of using differin, your skin may be dry, red, or scaly.
A:
During your first 4 weeks of using Differin, your skin may be dry, red, or scaly.