Which of the following is true about the mass of an object? it decreases if weight increases. it cannot be measured accurately. it is the amount of matter in the object. it is the amount of space occupied by the object.

It is the amount of matter in the object.

Explanation:

It is the amount of matter in the object, in physics mass is how much matter is there on an objet, the volume depends of how much does this matter occupies on the space, and the weight is the force with which the object is pulled into the gravitational force of the planet or space where the object is, for example, in space since there´s no gravitational foce, all objects weight the same. But all objects have mass, and have an amount of matter in them.

acid rain does not usually kill trees directly. instead, it is more likely to weaken the trees by damaging their leaves, limiting the nutrients available to them, or poisoning them with toxic substances slowly released from the soil. the main atmospheric pollutants that affect trees are nitrates and sulphates.

a polar bond is formed when electrons are shared unevenly between atoms