The sun like all stars is constantly using up its (Fuel)
so eventually like all other stars it will create a supernova and we would all die
thankfully that won't happen for another 5 million years
The correct answer is: 4) Standing defenses are always present; induced defenses develop in response to a threat
Induced defense is defense that can be changed or invoked when needed. Induced defenses are slow to happen. When invoked, induced defense requires energy but otherwise doesn’t.
Standing defense is always there. It is use, for example when predation is a constant threat.
The answer to the question is Eukarya
(D)an atom can join with other kinds of atoms.
Basically he explained what a molecule is.
The tundra has little variation in temperatures
