Final answer:
The answer is B. Types of fossils, as fossils can contain minerals like silica and calcium carbonate. Minerals in fossils can indicate if a fossil is original or altered and are also important in rock classification.
Step-by-step explanation:
The question is asking whether 'silica, calcium carbonate, everything else' represent types of minerals, fossils, rocks, or isotopes. The correct answer is B. Types of fossils. Fossils can contain different minerals such as silica and calcium carbonate which are biologically produced. For instance, silica is found in the hard parts of some marine animals and plants, while calcium carbonate is commonly found in shells and other organisms. Minerals can help to identify whether a fossil is original material or altered due to mineral replacement.
When identifying rocks, it's important to note that rocks such as granite, arkose sandstone, and gneiss contain common minerals like quartz, feldspar, and mica. The presence and type of minerals are key in classifying the rock type. There are three main rock types: igneous, sedimentary, and metamorphic, all made up of different minerals. In fossils, minerals such as silica and calcium carbonate often undergo replacement, where the original skeletal material is substituted on a molecular level while sometimes retaining cellular details.