Question

On Earth Day, the students consider their ____________ habits of littering or wasting resources, which are extremely harmful to our planet.

Answer 1

Pernicious

Step-by-step explanation:

The definition of pernicious is having a harmful effect, especially in a gradual or subtle way.

Answer 2

On Earth Day, the students consider their pernicious habits of littering or wasting resources, which are extremely harmful to our planet