Choose the correct answer.

There are many factors that _______ to global warming.

Choose the correct answer.

Deforestation activities are destroying the local ______ as well as the archaeological sites.

Choose the correct answer.

The country has vast oil reserves and ______ deposits of other minerals.

Choose the correct answer.

The newcomers can pose a threat to ______ of species by altering ecosystems.

Choose the correct answer.

The host country can undertake conservation ______ to build up or maintain biodiversity.

Choose the correct answer.

Ecosystems _______ a lot of biodiversity are generally stronger and more resistant to disaster than those with fewer species.

Choose the correct answer.

The horse is not native _______ America – it was introduced by the Spanish.

Choose the correct answer.

It is now considered essential for any new fish-farming businesses to consult the relevant ______ agency.