Deer will begin to compete with each other for grazing plants.
The list of choices posted along with the question doesn't include anything that's likely to result in any competition at all.
Exploitative competition is an indirect form of competition where there is a limited resource controlling the situation. An example would be with trees. The older, taller trees create a canopy effectively absorbing the available light. Thus, the younger, smaller trees do not have access to that resource and are less likely to survive. Interference competition is a direct form of competition where an organism actively interferes with another organism's ability to obtain it's resource. Although there may be plenty of the resource, it's the action of another organism preventing them from getting it. An example would be with American Bullfrogs. They will eat most anything, including younger, smaller bullfrogs. That aggressive behavior takes out competition for the bigger frog's resources.
False
Values
your tone
Organisms that fill the same niche in a given ecosystem are most likely to be competitors, since they would need the same resources (example: food). If the ecosystem wasn't rich enough in resources to support both (or more than 2) species that fill the same niche they'd have to compete with each other to survive.
None. Despite what you may hear, humans do not and likely cannot change climate.
competition between organisms
Yes, but it all depends on where the grassland is located (the elevation or how far north/south it is). The higher the elevation and the closer the grassland is to the North or South Pole, the more likely it is to get snow.
Tractors
Tractors
Tractors
Tractors
Evolution can exist without competition. Competition is what gives evolution a "direction"; it's what guides evolution. Note that there's no literal competition. Individuals within a population don't go out of their way to trick one another out of resources. It's simply that some of these individuals are better at gathering resources, and at surviving, and at breeding, than other individuals. Which makes that their genes are more likely to make it to the next generation than the genes of the others.
grass
It is least likely to be in pure competition.
Most likely the Hare/Jackrabbit.