What change or transition in habitat did whales ancestors make?

To first started living on land and that is where the traits and transitions moved to water instead of land

They treats moved to water instead of land but was on land first

Answer (d) may increase or decrease porosity through dissolution or deposition;

The answer is c, i, iii, and iv. this is because farming and mining deal with harvesting raw materials, construction work falls under manufacturing, and piloting a plane is a service. ii is wrong because making bread is using  raw materials to produce goods, which would fall under the secondary sector, not primary.