The logical answer is c provided that the "new, better idea" stand up to scrutiny under the scientific method.
Politics (b.) should never be a reason for changing scientific ideas.
Likewise, the fame of a particular scientist should have nothing to do with the modification of a scientific idea.
Science uses the scientific method and whether people are tired of old ideas or not is not a reason to change them.
The gland that controls formation would be testes.
Answer:
The difference between the cellular make - up of a living organism and aluminum can is the ability to use energy .
The physical processes on Earth create constant change. These processes—including movement in the tectonic plates in the crust, wind and water erosion, and deposition—shape features on Earth's surface.
It couldn't be analysed chemically because it's chemical composition is to complex. It would be hard for us to analyse them because once it has been removed from the organism, it ends as protoplasm only.
