Answer:
1. Symbiosis; relationship.
2. Parasitism; relationship; benefits; harmed.
3. Benefit.
4. Commensalism; benefits; neutral.
Explanation:
Ecology can be defined as a branch of biology that typically deals with the study of the relationship or interaction between organisms and their immediate environment. The four (4) main types of ecological relationship between living and non-living organisms include the following;
1. Symbiosis is a close, long-term relationship among two or more species that live and interact together.
2. Parasitism is a special type of symbiotic relationship in which one organism feeds on and lives in or on another organism. This is the parasite that benefits and the host organism is harmed.
3. Mutualism is a relationship in which both members benefit.
4. Commensalism is a relationship in which one member benefits, but the other organism neither benefits nor is harmed. The effect is neutral.
