I would say D and A are your answers :)
<span>A law is a theory that has explained a number of observed phenomena, and it has predicted a number of other phenomena which may as yet be unobserved.
In that sense, a law is a theory that has not yet been proven wrong or given rise to any contradictions.
A theory is just a theory until it has been proven true by experiments and observation</span>
<span>The ability to choose a mate does improve offspring fitness in fruit flies. The choice made by the female fruit fly is based on a recognition pattern of the male's ability to highlight its potency and "genes".
As a conclusion, the better the male's genes, the better the offspring's fitness.</span>
Answer:
I personally say B.
Explanation:
The enzymes are found in the saliva and stomach, but without saliva you can't break down food
Answer:
Trial reproducibility
Explanation:
The reprocibility is one odf the most important part of the scientific method.
If the trial or investigation is well planned and conducted, the results could be reproduced by any investigator, researching on any place with any sample, as long as the new trial is conducted with the same parameters.
If the results are not reproducible, the investigation has a bad thecnic and is not usefull.
