____________ is still largely based on traditional methods in some countries. maanviljely

The panda's natural _______ is the bamboo forest. elinympäristö

Most plastics are not ______________. luonnossa hajoava

Most poor people in developing countries survive on _______________. kotitarveviljely

___________________ is a major environmental problem because it increases the amount of UV radiation that reaches Earth's surface. otsonikato

He spread ___________________ on the field with a rake. lannoitetta

People are dying because of _____________, poverty, and disease. ylikansoittuminen

Insects are fairly low down on the __________.ravintoketju

the threat of a global _______________. ilmastonmuutos

The red squirrel is in danger of _______________ in England. sukupuuttoon kuoleminen

villieläinten suojelu

The sea turtle is an _______________. uhanalainen laji