Increase Due to melting polar caps
increase, causing the planet to warm due to the greenhouse effect.
increase
Huge amounts of energy would be required to increase or decrease the tilt of the Earth, and the result would likely be devastation over the entire surface of the planet.
Increase.
Because Earth's gravity is becoming less and less with the larger amount of distance between it and the object.
decrease
The mass of the Earth remains relatively constant because the amount of matter on Earth does not significantly increase or decrease. However, the Earth gains a small amount of mass each year from meteorites and space dust that enter the atmosphere.
it will increase (get hotter).
What do you mean increase, decrease, or stay the same? Do you mean the temperature?
An increase in cloud cover or an increase in atmospheric particulates like aerosols would lead to a decrease in the amount of insolation absorbed at Earth's surface by reflecting more sunlight back to space before it can reach the surface.
Earth
Your mass remains the same.