The anterior and posterior roots of the lumbar and sacral spinal nerves are than the roots of the other spinal nerves.

they had the law tat factories that produces smoke cannot be built near residential buildings.

building of proper sewage system was done to ensure that the waste is carried away from the humans so that they do not get diseases from it.

also they built water systems to provide water in those areas which are drought prone.

b. climate change will cause an increase in biodiversity of all ecosystems.

hope this