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The conversion of native vegetation into crop and grazing lands, as well as unsustainable land-management practices, are the two most significant direct causes of land degradation. Other considerations include the effects of climate change and land loss due to urbanization, infrastructure, and mining.
Answer:
Better-educated people make their coworkers more productive.
Explanation:
An external benefit or positive externality is a term that describes the benefit of an activity, that is given to a party that is not part of the actual activity. Hence, external benefit of education is the educational benefit given to a party, that is not actual part of the educational activity or process, such as making people around the educated individual to be productive or informative.
Hence, in this case, the external benefit of education is "Better -Educated people make their coworkers more productive", as those coworkers and the company at large, are benefiting from the educated individual.
Australia's animal populations adapted to a unique ecosystem after separation from other plates.
Answer: Option D
<u>Explanation:</u>
Australia has unique species of animals compared to the rest of the world because of it's long time separation from the other continents which led to the adaptation of the animals on this continent to the unique ecosystem of Australia resulting in some unusual Australian animals. The animals which were originally on Australian landmass had no more contact with the animals in other part of the world, thus they developed independently.
