Answer:
The study is called ecology
Explanation:
Mark as brainliest if I'm correct
Answer:
Gases have mass, because they are made up molecules which have mass
First, let us define Electronegativity. Electronegativity is "the ability of an atom to attract electrons." In addition, electronegativity increases in elements from left to right, while on the other hand, electronegativity decreases from top to bottom in an element group. It decreases because the atomic radius increases as we go downward an element in the group.
