this is very simple.
act of human means that either the will or knowledge is absent while human act is the complete presence of the will and the knowledge.
a man is cheeting on his wife and she catches him in the act.
Acts of man are instinctive and are not under the control of the freewill. Here are some examples: breathing blinking sweating sneezing yawning These are just some examples. Any action performed by a man but not under his control or actions not controllable at all are acts of man.
It depends on the cause of the fire. Arson is an Act of Man. A forest fire is an Act of God.
HIV
Some examples of man made fibres are: nylon, polyester and acrylic :)
The act of pillaging.
Man vs man
UFC Match?
Do you mean 'sympathetically"?
The act or process of inferring
Water, ammonia, and alcohols are examples of molecules that can act as both hydrogen bond acceptors and donors.
Suicide is a human act. FYI, an act of man is an act that can be shared with other animals. This includes acts such as sleeping and eating. A human act, on the other hand, is an act that is proper ONLY to man. Such acts include cursing and the like. So suicide is an act that only man can think of and, therefore, making it a human act since animals would never attempt to suicide because every animal's instinct is to survive.