Answer:
Your answer would be A) Ganymede.
Ancestors, it's proper term is ancestral veneration.
The answer is letter C.
Terrigenous sediments come from continental rocks, meaning they come from inland. The erosion of rocks from the environment (e.g. volcanic eruptions, rock weathering) causes the development of these sediments. These sediments may consist of sand, mud, and silt, that are usually carried to bigger bodies of water by rivers.<span />
The answer to your question is knowledge. Scientific knowledge is the information gathered by the systematic study of nature.