<Table> <Tr> <Td> </Td> <Td> <P> Microhylidae </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> Afrobatrachia </Td> <Td> <Table> <Tr> <Td> Xenosyneunitanura </Td> <Td> <Table> <Tr> <Td> </Td> <Td> <P> Brevicipitidae </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> <P> Hemisotidae </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> Laurentobatrachia </Td> <Td> <Table> <Tr> <Td> </Td> <Td> <P> Hyperoliidae </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> <P> Arthroleptidae </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> <P> Microhylidae </P> </Td> </Tr> <Tr> <Td> Afrobatrachia </Td> <Td> <Table> <Tr> <Td> Xenosyneunitanura </Td> <Td> <Table> <Tr> <Td> </Td> <Td> <P> Brevicipitidae </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> <P> Hemisotidae </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> Laurentobatrachia </Td> <Td> <Table> <Tr> <Td> </Td> <Td> <P> Hyperoliidae </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> <P> Arthroleptidae </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Table> <Tr> <Td> Xenosyneunitanura </Td> <Td> <Table> <Tr> <Td> </Td> <Td> <P> Brevicipitidae </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> <P> Hemisotidae </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> Laurentobatrachia </Td> <Td> <Table> <Tr> <Td> </Td> <Td> <P> Hyperoliidae </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> <P> Arthroleptidae </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table>

Why frog is kept in class amphibia give four reasons