The destruction of forests is contributing to the _______________. kasvihuoneilmiö

Most plastics are not ______________. luonnossa hajoava

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

Insects are fairly low down on the __________.ravintoketju

________________ is destroying large areas of tropical rain forest. Metsien tuhoutuminen

The sea turtle is an _______________. uhanalainen laji

villieläinten suojelu

The mountain gorilla is on the verge of ______________. sukupuuttoon kuoleminen

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

Lupine is an _______________ that poses a threat to the Finnish nature. tunkeutujalaji

Most poor people in developing countries survive on _______________. kotitarveviljely

____________________ that farmers spray on their crops kill pests, but they can also damage people's health. tuholaismyrkyt