There are many reasons to protect endangered animals. Here are some of them in English:1. Biodiversity: Protecting endangered animals helps maintain biodiversity on Earth. Biodiversity refers to the complex interactions between species of organisms and between them and the environment, forming a complex and fragile ecosystem. If we allow certain species to go extinct, this could have an irreversible impact on the entire ecosystem.2. Food chain: Animals play an important role in the food chain. When one species goes extinct, others in the food chain can be affected and even face their own extinction. Protecting endangered animals helps to maintain the balance of the ecosystem.3. Ecological services: Ecosystems provide many services that are beneficial to humans, such as providing food, water, climate regulation, etc. Protecting endangered animals helps to maintain these ecological services and ensure the sustainable development of human society.4. Ethical issues: Humans have a responsibility to protect animals that are endangered by our activities. Our actions, such as habitat destruction, overhunting and pollution, take a huge toll on these innocent lives. We have a responsibility to take action to provide them with a safer and more suitable environment.5. Human interests: Protecting endangered animals also helps to protect human interests. For example, the medicinal value, economic value and scientific research value of some endangered animals have important contributions to human society. To protect these animals is to protect our own interests.Therefore, the protection of endangered animals is of great significance to maintaining ecological balance, protecting ecological services, promoting sustainable development, and improving human well-being.保護(hù)瀕臨滅絕的動(dòng)物的原因有很多，以下是其中幾點(diǎn)用英語(yǔ)回答的原因：

1. 生物多樣性：保護(hù)瀕臨滅絕的動(dòng)物有助于維持地球上的生物多樣性。

生物多樣性是指生物種類之間以及它們與環(huán)境之間的復(fù)雜相互作用，形成了一個(gè)復(fù)雜而脆弱的生態(tài)系統(tǒng)。如果我們?cè)试S某些物種滅絕，這將可能對(duì)整個(gè)生態(tài)系統(tǒng)產(chǎn)生不可逆轉(zhuǎn)的影響。

2. 食物鏈：動(dòng)物在食物鏈中扮演著重要的角色。當(dāng)一個(gè)物種滅絕時(shí)，食物鏈中的其他物種可能會(huì)受到影響，甚至面臨自己的滅絕。保護(hù)瀕危動(dòng)物有助于維持生態(tài)系統(tǒng)的平衡。

3. 生態(tài)服務(wù)：生態(tài)系統(tǒng)提供了許多對(duì)人類有益的服務(wù)，例如提供食物、水源、氣候調(diào)節(jié)等。保護(hù)瀕危動(dòng)物有助于維護(hù)這些生態(tài)服務(wù)，確保人類社會(huì)的可持續(xù)發(fā)展。

4. 倫理問題：人類有責(zé)任保護(hù)那些因我們活動(dòng)而瀕臨滅絕的動(dòng)物。我們的行為，例如破壞棲息地、過度捕獵和污染，對(duì)這些無辜的生命造成了巨大的傷害。我們有責(zé)任采取行動(dòng)，為它們提供一個(gè)更安全和更適宜的生存環(huán)境。

5. 人類利益：保護(hù)瀕危動(dòng)物也有助于保護(hù)人類自身的利益。例如，一些瀕危動(dòng)物的藥用價(jià)值、經(jīng)濟(jì)價(jià)值和科學(xué)研究?jī)r(jià)值對(duì)人類社會(huì)具有重要貢獻(xiàn)。保護(hù)這些動(dòng)物就是保護(hù)我們自己的利益。因此，保護(hù)瀕臨滅絕的動(dòng)物對(duì)維護(hù)生態(tài)平衡、保護(hù)生態(tài)服務(wù)、促進(jìn)可持續(xù)發(fā)展、提升人類福祉等方面都具有重要意義。