A small bird gathers pollen and nectar for food, but at the same time is aiding in the plant's reproduction by spreading pollen to other flowers it
visits. What does this relationship demonstrate? *

Mutualism

Explanation:

In biology, the term symbiosis refers to close and often long-term interactions between organisms that belong to different species. There are three main types of symbiotic relationships:

In the given scenario, both the bird and plant benefit from their relationship. The bird gets food, while the plant reproduces more easily. This is why their relationship is an example of mutualism.

before, trains worked using the steam engine. thus, it uses heat so it is crucial to apply heat balance. the steam engine absorbs energy during the stage of boiling water. so, this is the endothermic reaction. when the steam is used to work the piston, it has to release this energy through running the train. the excess energy is released as an exhaust to the chimney. this is the exothermic process because it releases energy to the surroundings.