ssc previous year one word substitution

STUDY {A study of-->}

Matching exercise

Match the items on the right to the items on the left.

ORNITHOLOGY	??? birds bones children fossils mountains
OROLOGY	??? birds bones children fossils mountains
OSREOLOGY	??? birds bones children fossils mountains
PAEDOLOGY	??? birds bones children fossils mountains
PALAEONTOLOGY	??? birds bones children fossils mountains