8. What are the main causes
of the loss of biological
diversity nowadays?

Gap-fill exercise

Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button to get a clue. Note that you will lose points if you ask for hints or clues!
The biggest dangers to
diversity today are the of
humans. The main them is the
destruction habitats caused by the
of the cities, deforestation,
and fires. The second the
invasion of ecosystems nonnative
species introduced by ; these
species change the of
ecosystems causing harm. big
dangers are predatory and
fishing and global .