ANSWER: A. The sun is located at the centre of the universe
        
             
        
        
        
Answer:
Decrease in the population of coyote occurs after the reintroduction of the wolf within the Adirondacks  effect.
Explanation:
Wolves are the top predator in the ecosystem. They hate coyote and kill them and sometime eat them too. So the reintroduction of the wolf decreases the population of coyote by killing them directly and by consuming the prey and the coyote die due to hunger. Coyote feed on rabbit, snakes, deer, fruits and grasses so decrease in coyote population increases the availability of grasses and other animals for different animals. 
 
        
             
        
        
        
I believe it would be c not exactly sure tho
        
             
        
        
        
As far as I know, radioactive dating is the measure of radioactive substances in a fossil or something. Like the fossils have a radioactive substance in them, it is the only thing that can show how long the fossils been aging, therefore being able to show the date. And thats how radioactive dating works, and that is how a paleontologist uses it