Because you cannot test it or observe it.
A scientific theory are created through the scientific method, in the scientific method you need to be able observe it and experiment.
Its D, because i had this problem on a test, and of course i figured out the answer the hard way... lol
Answer:
Three examples of fossil fuels are:
1). Petroleum
2). Coal
3). Natural gas
There are many environmental negative direct outcomes of unused excess nitrogen from nitrogenous fertilizers. One of these is eutrophication. Eutrophication is the excessive richness of nutrients in a water body as a result of fertilizer run offs from the land, which causes a dense growth of plants in the water. Other negative outcomes are: green house effects, acid rain and contamination of underground water which has negative effects on human health.
Black-crowned night-heron. This predator is adapted to hunt at night. In
the French Guiana this is one of the major night heron species with its
cousin the Yellow-crowned night-heron (Nycticorax violacea). Feeds
mainly on aquatic animals, including fish, amphibians and insects.
Coastal swamps.
