Answer:
Sociology is based on research, while Social Work focuses on problem-solving.
Sociology is the theoretical part you will need to study and apply as a social worker.
Social work is, sometimes, mistakenly considered applied Sociology. No. Just no.
The moon is nothing but a oight mirror of the sun. So some light from the sun lights a part of the moon(depending on it's position) . On different days the moon has different position(taking sun as reference) so it is diferently lighted. This creates the phases
It's nothing to explain here. Tourism helps in increasing the national income. It plays a vital role in our country.