Ecology is how nature works and flows, without it everything would be messed up, such as food chains and how people would be ranked on natures list.
The appropriate response is Nitrogenous Base. It is just a nitrogen containing atom that has an indistinguishable concoction properties from a base. They are especially vital since they make up the building pieces of DNA and RNA: adenine, guanine, cytosine, thymine and uracil.
They would know if they see anything like traces of water or anything else that would be nessecary for a living organism to have. They look for these with technology like the hubble telescope as well as the drone on Mars to gather as much information as possible.
Moon...? idk ;~;... I'm pretty sure the moon is one of the focal points.
