mutual relationship (when both organisms's benafit)
you can find the answer herehttp://www.takdangaralin.com/kinds-of-relationships-between-organisms/
foodweb
their common evolutionary ancestry and shared genetic material, which have led to the conservation of certain molecular and structural features. This indicates a close evolutionary relationship and a common ancestor from which these organisms have diverged over time.
I don't really know that one I will have to look it up and put it up here
Food web
Competition (the competition between organisms for a limited amount of resources), predation (where one thing kills and eats another), and symbiosis (a close relationship between two organisms where one is benefited.
natural selection
Natural selection is one mechanism that contributes to the diversity of life on Earth rather than demonstrating unity among living organisms. It acts on individual organisms within populations, leading to adaptations that enhance their survival and reproduction in specific environments. The unity among all living organisms is better demonstrated through their shared genetic code, structural similarities, and common ancestry.
It is a symbiotic relationship, as both benefit.
So if there is a same amount of populations of different types of organisms, and they are consumers and decomposers, it balances the populations of organisms because they eat other plants and animals. Wheras if you take a population of organisms out that changes organisms
Ecology is the study of interactions between organisms and their environment. THis includes interactions organisms have with each other, as well as their abiotic environment. Ecologists often cover diversity, distribution, population of organisms, as well as the competition between them and among ecosystems.
A mutualistic relationship is beneficial to both organisms involved. In this type of relationship, both organisms benefit from the interaction, such as a plant providing nectar to a bird for pollination.