Deer run in zigzag patterns when being chased by predators. what type of adaptation is this? a. behavioral b. physiological c. structural d. ecological

The right option is; a. Behavioral

This type of adaptation is behavioral adaptation.  

Behavioral adaptation is any action an organism (plant or animal) takes or how it behaves usually in reaction to certain external stimulus for its survival. Behavioral adaptations perform a vital role in the survival of an organism. Examples of behavioral adaptions include how an animal moves, how it may keep itself safe, or what an animal is able to feed on.

the farther away the object is from the central star (the sun) it's gravitainal pull on the object is weaker when it is farther

explanation:

the relative atomic mass of an element is the mass of one atom of that element, relative to 1/12th of the mass of a  1212c atom. to convert to an absolute mass in kg, it is necessary to multiply by  1.661×10−271.661×10−27.

the relative atomic mass is roughly equal to the number of neutrons, plus the number of protons, in the nucleus of the atom.

for elements with more than one stable isotope (different types of nucleus with different numbers of neutrons but the same number of protons), the quoted mass is usually the average mass, weighted by the relative abundance of the different isotopes.