Technology can change society through what becomes popular, like the cell phones that most people today carry with them, and the fact that they have evolved into phones with computer capabilities.
"Animals will migrate to other regions in search of food" Whenever an area in a forest is cleared up to build a road or because of any other reason the habitat of the animals residing there is destroyed.
Yes you can. The atomic mass measured from the proteins and neutrons in an atom, since you know he number of protons, you can subtract and be left with the number of neutrons.