Q: Does water have viscosity?
A: Viscosity is resistance of fluid to deformation. Water is not resistant to deformation.
The answer is no.

Q: Is Christianity better for global warming than Satanism?
A: Global warming happens because CO2 is released into the atmosphere and warms it up. Humans release two tons of carbon dioxide a year. Reducing the population will lead to a reduction of CO2 in the atmosphere. The Christian Crusades caused the deaths of nearly three million people. In 1980s and 1990s there were allegations of Satanic ritual deaths, though only a few cases were substantiated.
The answer is yes.

Q: Is Earth Day celebrated in summer?
A: Earth Day is celebrated on April 22. Summer runs from about June 20 to September 20.
The answer is no.

Q: Does Neville Longbottom have more courage as a child than as an adult?
A:
Neville Longbottom is a character from the Harry Potter series. In the first few books of the Harry Potter series, Neville is a child. In the final few books of the Harry Potter series Neville is becoming an adult. Neville's first appearances in the series show him to be very cowardly. Neville is considered a hero by the end of the series.
The answer is no.