The last type is Amensalism, which is where one species is inhibited or destroyed and the other one is unaffected. It involves one restricting the success of the other without being affected positively or negatively by the presence of the other.
There are two types of Amensalism, which are competition and antibiosis. In competition a larger or more powerful organism excludes another organism from its source of shelter or food.
For example, elephants that crush plants and insects while moving though a forest.
In antibiosis, one organism secretes a chemical that kills the other organism, while the one that secreted the chemical is unharmed.
For example, black walnut trees, secretes a chemical that harms or kills some species of neighbouring plants, from its roots.