1. “Species” is another word for kinds of plants and animals. “endangered” means they are in danger of becoming extinct. “extinct” means that a species no longer exists. For example, we can say that dinosaurs are extinct.
2. For millions of years, since people began to live on the earth, they have used animal furs to keep warm. Today women pay a lot of money for expensive fur coats, as they want to be fashionable. Another example is the elephant. Many centuries ago, people discovered that they could use the ivory of elephant tusks. Tusks are used for making teeth, statuettes, bracelets and otherornaments ... and even for decorating the walls of palaces.
3. Thirty years ago the bald eagle was a disappearing species. It was an endangered species. Then people stopped killing and began protecting it.
4. ___Plants and animals are important on our planet. If any plant or animal disappears, this will disturb everything else - other species will also disappear.
5. Even predators, which kill and eat other animals are necessary for nature. They hunt and kill those animals which are weak. So, only healthy and strong animals keep living. In this way nature selects healthy individuals to continue the life of the species. This is called “natural selection”.
Present Perfect- простое совершенное время
Present Perfect Continuous- Действие, которое началось в и которое происходит в течение некоторого периода времени, и продолжается в настоящем.
Past Continuous- длительное действие,которое происходит в
Past Perfect -Действие, которое завершилось до другого действия в или до момента в
Past Perfect Continuous-Действие, которое происходило в течение периода времени до другого действия в или до момента в
Future Simple-Действие, которое должно произойти в будущем.
Future Continuous-Действие, которое будет происходить через некоторое время в будущем, в какой-либо указанный момент.
Future Perfect-Действие, которое завершится до другого действия в будущем, или до момента в будущем.
Future Perfect Continuous-Действие, которое начнется в будущем, и которое будет происходить в течение некоторого периода времени до другого действия в будущем, или момента в будущем.