While plants can be used for food, medicine, and decoration, they are not typically used as a source of fuel.

Photosynthesis is the process by which plants use sunlight, water, and carbon dioxide to produce glucose and oxygen.

Competition is not a type of plant-human interaction, but rather a type of interaction between two organisms of the same species.

Transpiration is the process by which plants lose water vapor through their leaves, which helps to cool the plant and transport nutrients from the roots to the leaves.

Camouflage is not a type of plant defense mechanism, but rather a type of adaptation that helps organisms blend in with their surroundings.

Nitrogen fixation is the process by which plants convert nitrogen gas into a usable form, which is essential for plant growth.

Self-pollination is not a type of plant-pollinator interaction, but rather a type of pollination that occurs when pollen from a flower is transferred to the stigma of the same flower.

Sexual reproduction is the process by which plants reproduce sexually, involving the fusion of male and female gametes.

Mutualism is not a type of plant-herbivore interaction, but rather a type of interaction between two organisms that benefits both organisms.

Absorption is the process by which plants absorb water and nutrients from the soil through their roots.

Mutualism is not a type of plant-disease interaction, but rather a type of interaction between two organisms that benefits both organisms.

Tropism is the process by which plants respond to environmental stimuli, such as light, gravity, and touch.

Mutualism is not a type of plant-human conflict, but rather a type of interaction between two organisms that benefits both organisms.

Starch synthesis is the process by which plants store energy in the form of starch, which is a complex carbohydrate.

Mutualism is not a type of plant-animal interaction, but rather a type of interaction between two organisms that benefits both organisms.