Extensively tested and generally accepted : educated guess that has yet to be tested a) hypothesis : theory b) theory : hypothesis c) observation : theory d) observation : hypothesis

The correct answer would be B) theory: hypothesis.

A hypothesis refers to the proposed or tentative explanation of any physical or natural process.

It usually provides the first step of any research or experiment.

It is highly testable as it is tested with the help of a number of scientific experiments and observations et cetera.

In contrast, a scientific theory is a well-proven explanation of aspects of the natural world. It is based on facts which have been confirmed through experiments and observation.

explanation:

plz give me the characteristics.

the flagellates share a facultative mutualist association with termites. mutualism is a biological interaction between individuals of different species, where both benefit from each other. this is called cooperation and it differs from other interactions such as cases of exploitation, such as parasitism, predation. in this interaction called association, both species cooperate and benefit.