How do scientists determine where an earthquake starts? by studying seismographs taken from different locations

by studying a seismogram

by studying the S and P waves on a seismogram

by studying the strength of the S and P waves on a seismograph

the answer is sex-linked recessive.

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.

in a chemical reaction, the atoms and molecules produced by the reaction are called products. no new atoms are created, and no atoms are destroyed. in a chemical reaction, reactants contact each other, bonds between atoms in the reactants are broken, and atoms rearrange and form new bonds to make the products.