Commensalism is harmful to at least one of the participants. true false

False.
Commensalism is the symbiotic relationship in which one organism benefits and the other remains unaffected.

I think it's false.

Hope this helps

“other instruments such as gravimeters and magnetometers are also used in the search for petroleum. extracting crude oil normally starts with drilling wells into an underground reservoir. when an oil well has been tapped, a geologist (known on the rig as the "mudlogger") will note its presence. “ this is what i found on google i hope it