Question

which type of rock can be made from the remains of microscopic organism

sandstone
metamorphic rock
granite
igneous rock

Answer 1

The type of rock that can be made from the remains of microscopic organisms is **sandstone**. More specifically, certain types of sandstone, such as those containing silica or carbonate, can originate from the accumulation of microscopic marine organisms, like diatoms and foraminifera.

However, if you are looking for a more direct relationship with microscopic organisms, **limestone** (not listed as an option) is often associated with the remains of marine microorganisms.

To clarify the options provided:
- **Sandstone**: can contain sediments from organisms.
- **Metamorphic rock**: is formed from existing rocks under heat and pressure, not directly from organisms.
- **Granite**: is an igneous rock formed from cooled magma; not from organisms.
- **Igneous rock**: forms from solidified magma or lava.

Thus, from the choices given, sandstone is the most relevant.