What is the theory for formation of fossil fuel plz help A:cabon dioxide levels decreased, resulting in nitrogen fixation

B:earth cooled, changing oxygen to carbon

C:fossil fuels are the remnants of organisms that lived a long time ago and were buried, heated, and formed into hydrocarbons

D:fossil fuels arrived on earth from comets and asteroids

Afood web shows who eats who in any given habitat. every living thing, from one-celled algae to giant blue whales, needs food to survive. each food web is a possible pathway that energy and matter can follow through the habitat. a food web begins with producers: organisms that convert sunlight into usable chemical energy. the food web is completed by the decomposers who turn organic wastes, such as decaying plants, into inorganic materials, such as nutrient-rich soil. decomposers complete the cycle of life, returning nutrients to the soil or oceans for use by producers. in this food web, identify the decomposer.

What undergraduate degree can a student earn at a four-year college (not specific to a field of study)?

How do we determine if they are made with matter