3 Reasons why animals migrate

to find a mate, because of a diminished food source, drought, flooding, volcanic activity, destruction of habitat, human presence in a habitat, an earthquake, seasonal changes, overpopulation of an area

Explanation:

the number of protons in the nucleus of a given element. has slight luster and conducts electricity at high temperatures like metal.but like a nonmetal,boron is brittle and does not conduct electricity well at low temperatures. in graphite, carbon is a soft,brittle solid.it is reflective,ductile,or malleable.