Im studying for a lesson but got slightly confused

it says to

label the interaction 'bird feeders in a backyard'
a) mutualism
b)commensalism
c)parasitism
d)competition

but i wasn't sure if that would be commensalism sense the organism a person put the feeder in the backyard and its the bird the other organism by giving it a source of food

Its Mutualism. Nobody gets harmed, both get benefits

You are Correct

to further explain the other answers

Mutualism is when two or more species intermingle and all of them are benefited, kinda like a bee and a flower, the bee benefits from the nectar while the flower is pollinated

Commensalism is when one provides indirectly and the other benefits, kinda like how those fish who follow sharks and get the scraps? The shark is benefiting the fish while it's not benefiting them or harming them as well

Parasitism is when one benefits and not the other, kinda like a leech or tick

Competition is when the two species are fighting for survival in an ecosystem, for things like land, food, water, and shelter

answer; i believe the correct answer is (4) flip a coin as each participant arrives,heads indicates assignment to the first group: tails indicates assignment to the second group;

answer; eurasia;