Bird migration/emigration/immigration happens every summer.
migration
The school exceeded / expanded / extended its library by adding more books.
expanded
A person whose work requires physical skill.
Manual worker.
Regular household work.
Domestic chores
Large area of buildings spread out irregularly.
Urban sprawl
Creatures and plants that live in the sea.
Marine life.
Before the flight, the pilot assured/ensured/reassured the passengers that everything was safe.
assured
The movie has a universal likeness / appeal / liking to audiences of all ages.
appeal
Doctors perform a(n) degree/rating/evaluation before making a diagnosis.
evaluation
There was mass migration/emigration/immigration from Ireland during the 19th century.
emigration
His speed exceeded / expanded / extended the legal limit, so he got a fine.
exceeded
Please assure/ensure/reassure that all doors are locked before you leave.
ensure
Hotels are given a(n) degree/rating/evaluation based on comfort and service.
rating
Their salary allows them a(n) degree/rating/evaluation of independence.
degree
I was nervous about the exam, but my teacher assured/ensured/reassured that I was well-prepared.
reassured
The painting captures a perfect likeness / appeal / liking of the king.
likeness
He developed a strong likeness / appeal / liking for photography.
liking
We decided to exceed / expand / extend our vacation by two more days.
extend
Equipment heated by the sun to produce energy.
Solar panel
Migration/Emigration/Immigration is a major political issue in many countries.
Immigration