5. Choose the correct sequence: Fertilisation Ball of cells Foetus Embryo a) Zygote b) Fertilisation Ball of cells Foetus Embryo Zygote Embryo Fertilisation Foetus c) Ball of cells d) Fertilisation Zygote Zygote Ball of cells Embryo Foetus

i would go with b

cytokinesis occurs after telophase so that eliminates d

and the entire reason for cytokinesis is for cellular reproduction

the correct answer is d

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.