A record of biological time can be found in igneous rock.

Answer 1

There seems to be a misunderstanding here. Igneous rocks are formed from solidification of molten magma or lava and are not typically associated with biological materials. Biological remains or evidence of biological activity are typically preserved in sedimentary rocks, such as limestone, shale, or sandstone, where organisms can be fossilized or leave traces behind.

Igneous rocks, being formed from volcanic activity or the solidification of magma underground, do not typically contain any biological material. Therefore, they do not provide a record of biological time. Instead, they can provide information about the Earth's geologic history, such as the age of the rock or the processes that formed it.