Good morning, Keith. I want to talk about the challenges of climate change and biodiversity [, baiəudai’və: səti] loss and some measures we should do. I will list
some challenges climate change bring about. (First, I’d like to simply introduce some
information about the reason of leading to climate change. Greenhouse gases
fossil['fɔsəl] mineral['minərəl] or firewood have a high produced by burning
permeability[,pə:miə'biliti] to visible light from the solar radiation and high
absorptivity[,æbsɔ:p'tivəti] long wave radiation the earth reflected and can strongly absorb infrared[,infrə'red] lays of earth radiation. That is greenhouse effect which leads to global warming.) Then here are the challenges. Global precipitation [pri,sipi'teiʃən]
will be redistributed and glacier['ɡlæsjə] and frozen earth will melt. So there will be
more floods in spring and summer and the sea level will rise up. What’s worse, some
countries and regions whose elevation is lower will be submerged[səb'mə:dʒd]. There
also will be less and less tourist attractions which are famous for their beautiful snow. Climate change also leads to evaporation [i,væpə'reiʃən] of water in American soil
faster. With carbon dioxide becoming more and more, the water in the soil will change. Climate change affects the agriculture, the distribution of biological community, human living environment and health. It can also cause biodiversity loss. Now I’ll talk about the challenges of biodiversity loss. It’s sure that it will break the ecological
balance, affect the cultivation of good varieties and the development of industrial, science and technology. Of course, it will influence the education, entertainment, tour and so on. We
should do something to deal with the situation. We must plant trees and restore vegetations as many as possible. We must strengthen our environmental protective and saving consciousness ['kɔnʃəsnis] and reduce the emissions of carbon dioxide.
The more important things are that we should energetically develop a circular economy and
clean energy like solar energy and wind energy.