Question

underline the correct words.

1. (fossils, rocks) are the remains or imprints of plants and animals that died long ago.
2. fossils are usually found in (sedimentary, igneous) rock.
3. footprints of animals (may, may not) become fossils.
4. giant wooly mammoths have been found frozen in (mud, ice).

Explanation:

1. Fossils are the remains/imprints of organisms that died long ago, while rocks are not defined as such. So underline "Fossils".
2. Sedimentary rocks are formed from sediment accumulation, which is where fossils are typically found (igneous rocks form from magma, less likely for fossils). So underline "sedimentary".
3. Footprints of animals may become fossils (the process of fossilization can occur for footprints, "may not" would contradict the possibility of trace fossils). So underline "may".
4. Giant woolly mammoths have been found frozen in ice (mud would not preserve them frozen; ice can preserve them as seen in archaeological finds). So underline "ice".

Answer:

1. \underline{Fossils}
2. \underline{sedimentary}
3. \underline{may}
4. \underline{ice}