What does Primary challenges mean for school?

High enrolments, inadequate government funding, inadequate physical facilities, inadequate teaching and learning resource materials, poor teaching, overcrowded classes, poorly constructed classrooms, heavy workload for teachers due to understaffing, uncooperative parents, student indiscipline and poor financial ...

An ecosystem is in a certain area and includes living and non living plus there is weather conditions and a biome is a large amount of area with similar climate.so ecosystem is based on weather and biome is based on the average climate