Class6|Science Chapter2|Diversity in the Living World|Explanation Part2|Animated video · Study with fun
本视频讲解六年级科学第二章《生物多样性》第二部分，通过沙漠、山地等不同环境中的动植物例子，说明生物如何适应环境。适合练习生物相关词汇和表达。
Have you ever wondered why different plants and animals live in from deserts to mountains?
你是否曾经好奇过，为什么不同的植物和动物会生活在从沙漠到山脉的各种环境中呢？
Every region has unique...
每个地区都有其独特的……
Let's look at two simple examples, fish live in water.
让我们来看两个简单的例子：鱼生活在水中。
Their streamlined bodies and fins help them move smoothly through water.
它们流线型的身体和鳍状结构有助于它们在水中顺畅地游动。
Goats live on land.
山羊生活在陆地上。
Plants and animals found in one region are often very different from those found in another.
在一个地区发现的动植物，往往与另一个地区的动植物有很大差异。
This happens because each region has different temperatures, rainfall and landforms.
这种情况发生的原因是：每个地区的温度、降雨量以及地形都各不相同。
In the deserts of Rajasthan, water is scarce.
在拉贾斯坦邦的沙漠地区，水资源非常稀缺。
Days are extremely hot, while nights can be surprisingly cold.
白天的气温非常高，而夜晚的温度却出奇地低。
In the Himalayas, winters bring heavy snowfall.
在喜马拉雅山脉，冬季会带来大量的降雪。
Deodor trees have a special conical shape in sloping branches.
这种“除臭树”的树枝呈倾斜状，其特殊之处在于树枝的形状为圆锥形。
These features allow snow to slide off easily.
这些特性使得积雪能够轻松地滑落。
Because environments differ from place to place, plants and animals develop different adaptations.
由于不同地区的环境各不相同，植物和动物也因此演化出了不同的适应能力。
This is why biodiversity varies from one region to another.
这就是为什么生物多样性在不同地区之间存在差异的原因。
Camels living in Rajasthan's hot deserts have long legs and wide hooves.
生活在拉贾斯坦邦炎热沙漠中的骆驼，拥有修长的腿和宽大的蹄子。
Their long legs keep their bodies away from the hot sand.
它们修长的腿使身体远离炙热的沙子。
While wide hooves prevent them from sinking into loose sand.
宽大的蹄子使它们不会陷入松软的沙子中。
Camels living in Ladakh's cold desert are different.
生活在拉达克寒冷沙漠中的骆驼与其他地方的骆驼有所不同。
They have shorter legs that help them move easily in mountainous terrain.
它们的腿较短，这有助于它们在山区地形中轻松移动。
They have two humps that store food for long winters.
它们有两个驼峰，用来储存食物以度过漫长的冬季。
Although both are camels, their bodies have adapted to very different environments.
虽然它们都属于骆驼类动物，但它们的身体结构已经适应了截然不同的生存环境。
These adaptations help them survive where they live.
这些适应性特征帮助它们在所处的环境中生存下来。
Also, camels excrete small amounts of urine.
此外，骆驼排出的尿液量非常少。
Their dung is dry and they do not sweat.
它们的粪便呈干燥状态，而且它们不会出汗。
As camels do not lose much water from their bodies, they can survive for many days without drinking water.
由于骆驼体内的水分流失很少，因此它们可以在数天内不喝水也能存活下来。
Look at these beautiful rhododendrons in the Niljiri mountains.
看看尼利吉里山脉中这些美丽的杜鹃花吧。
They are short and have small leaves that help them survive strong mountain winds.
它们体型较短，叶片较小，这些特征有助于它们在强风中生存。
In Sikkim, I have seen rhododendrons that are much taller.
在锡金，我见过一些高度要高得多的杜鹃花。
Plants can develop different features in different regions to survive local conditions.
为了适应当地的环境条件，植物会在不同的地区演化出不同的特征。
During my visit to the Andaman and Nicobar Islands, I saw huge whales and colorful fish in the ocean.
在我访问安达曼和尼科巴群岛期间，我在海洋中看到了巨大的鲸鱼以及色彩斑斓的鱼类。
The streamlined body of fish helps them move easily through water.
鱼类流线型的身体结构使它们能够轻松地在水中游动。
This is an adaptation that helps them survive.
这是一种有助于它们生存的适应性进化。
Special features that help plants and animals survive in their surroundings are called adaptations.
帮助植物和动物在其生存环境中存活的特殊特征被称为“适应性”。
The place where a plant or animal lives is called its habitat.
植物或动物生活的场所被称为它们的栖息地。
Different habitats provide food, water, air, and shelter.
不同的栖息地为生物提供了食物、水源、空气以及庇护所。
Plants and animals that live on land belong to terrestrial habitats.
生活在陆地上的植物和动物属于陆地生态系统（即陆地栖息地）。
Forests, deserts, grasslands, and mountains are examples.
森林、沙漠、草原和山脉都是典型的例子。
Plants and animals that live in water belong to aquatic habitats.
生活在水中的植物和动物属于水生生物群落。
Some animals, like frogs, can live both on land and in water.
有些动物，比如青蛙，既可以在陆地上生活，也可以在水中生活。
These amazing animals are called amphibians.
这些神奇的动物被称为两栖动物。