Yes. Once the maximum entropy is reached, it won't increase any further; that means that no energy is left to effect any interesting processes.
The amount of disorder/randomness of a system is called the entropy of the system.
The entropy of the universe is increasing
Fundamentally, if the entropy of a system increases, that means that the energy of the system ("normalized" to , i.e., divided by the temperature of the system) has become more "dispersed" or "dilute". For instance, if a system increases its volume at constant energy and temperature, then the energy per unit temperature is now more "dilute", being spread over a larger volume. All spontaneous processes result in a "dilution" or "spreading out" of the energy of the universe. The more dilute the energy of a system is (the higher the entropy of that system) the harder is is to harness that energy to do useful work. Another useful way of thinking about entropy is to consider it as a measure of the amount of information needed to completely specify the state of a system. Ultimately, this means how much information is needed to specify the positions and momenta of every particle in the system.
Entropy will decrease.
In nature heat only moves naturally from warmer systems to cooler systems. One direction only. Never naturally from something cold into something hot. We can pump heat out of a system by doing work on it, such as a refrigerator where the refrigerant is compressed - making it much hotter than the surroundings - then letting it give off heat to the surroundings, then expanding it across a valve where the evaporation and expansion causes it to get colder than the inside of the fridge - then allowing it to absorb heat from the inside of the fridge, then sending it back to the compressor to start all over again.
In a closed system the entropy is constant.
That depends on what you mean by "cold" system. Entropy in any system can do one of three things: increase, decrease, or remain constant. If the system is closed, then entropy will only ever increase. If the system is open, entropy within it can do any of the three, provided there is a corresponding change in entropy outside the system (energy must come from or go to somewhere to effect an entropy change). The absolute amount of energy in the system makes no difference to the entropy of it. It is whether you have an open or closed system that counts.
false
Entropy is a measure of the amount of disorder a system has. More accurately the amount of work that can be extracted from a system. The more entropy a system has the less work that can be done. 1kg of steam at 500 degrees can do lots more work than a kilo of warm water. Entropy always increases in a closed system. Entropy is why everything eventually breaks down.
Assuming you mean can entropy be reduced; the answer is yes. Only in an open system such as our planet. The universe is a closed systems. The entropy of the universe cannot be reduced. Chemical changes can reduced entropy in an open system. When gas turns into a liquid or when a liquid turns into a solid; entropy is reduced.
Entropy tends to increase in a system.
Entropy is the measure of system randomness.
The entropy of the universe is increasing
Assuming this is a chemistry question... The entropy of the system increases, as entropy is considered a measure of randomness of a chemical system. The universe favors entropy increases.
Entropy
The entropy is lower.
Neither living organisms nor Earth nor even our solar system are closed systems. The minor entropy decreases caused by life processes are more than made up for by the entropy increases by the functioning of the sun, of the absorption in the oceans, etc. Entropy is countered by the influx of solar energy and the gravitational field of (in this case) the Earth. This influx of solar energy makes the Earth not a closed system. The gravitational field was never considered in the formation of the laws of thermodynamics (neither were magnetic or electro-static fields for that matter). By the second law - stars and planets should never form - and clearly they have.