Under what conditions does competition occur between individuals of the same or different species?

What would happen to the nutrients in an ecosystem if decomposers, such as bacteria, didn’t exist there?

Which flexible structure that supports the nerve cord and led to the backbone

The fruit of a certain plant is sweet and fleshy. the seeds of this plant have a seed coat that is fairly tough. the seeds germinate better if they are exposed to acid, or scarification. what is the most likely type of dispersal for this seed? water animal wind