many species have become extinct each year before biologists can identify them

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Many species have become extinct each year before biologists can identify them.

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It is found that endangered species are often concentrated in areas that are poor and densely populated, such as much of Asia and Africa.

World Wide Fund for Nature was formed to lớn bởi the mission of the Preservation of biological diversity, sustainable use of natural resources, and the reduction of pollution and wasteful consumption.

The Bali Tiger was declared extinct in 1937 due to lớn hunting and habitat loss.

A / an ____ species is a population of an organism which is at risk of becoming extinct.

Humans depend on species ______ to lớn provide food, clean air and water, and fertile soil for agriculture.

Current extinction rates are at least 100 to lớn 1,000 times higher than vãn ___ rates found in the fossil record.

Only a few of the many species at risk of extinction actually make it to lớn the lists and obtain legal ____.

All the countries of the area have ___ to lớn protect their wildlife but they are rarely enforced.

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Humans depend on species diversity to lớn ____ food, clean air and water, and fertile soil for agriculture.

_______ is a branch of Natural Science, and is the study of living organisms and how they interact with their environment.

It is reported that humans are the main reason for most species' declines and habitat _______ and degradation are the leading threats.

Forest dwellers had always hunted the local ____ but their needs had been small.

Almost half of turtles and tortoises are known to lớn be threatened with ____.

_______ is the protection of environment and natural resources.

Many schools provide environmental education to lớn increase students' _____ of conservation needs.

The world's biodiversity is declining at an unprecedented rate, which makes wildlife ___.

If an area is _______, all the trees there are cut down or destroyed.

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Hunting for meat and burning forests for soil cause __________ to lớn wildlife.

Life on Earth is ___ fast and will continue to lớn bởi sánh unless urgent action is taken.

Toxic chemicals from factories are one of the serious factors that leads wildlife to lớn the _____ of extinction.