I believe the answer would be D) kitchen scraps and grass clippings
Answer:
They are used as an indicator organism for pathogenic bacteria.
Explanation:
Coliforms are bacteria found in digestive tract of animals and humans. They are non-pathogenic, easy to culture and are used as an alternative indirect testing for presence of other microorganisms. Coliforms thrive in exact environmental conditions like other pathogenic bacteria, thus often used to indicate whether they are bacteria found in drinking water and swimming pools that might end up causing infections.
Therefore the existence of coliforms in water easily indicates feacal contamination.
Complex organisms need cells that can perform many different functions. they need to be supported on a cellular level. Without specialized cells you they won't be able to perform different functions.
The plant seed helps the plant DEVELOP and actually START GROWING.
It is the command central of the plant JUST LIKE how our BRAIN is the command central of US!
I hope I helped, and PLEASE choose my answer as the Brainliest! =D
THANK YOU!!!! :-)