The Great Barrier Reef, an underwater wonder that **is** over 1,400 miles off the coast of Australia, is like a magical city beneath the water! Giant sea turtles glide gracefully through the water, bright **fish** dart in and out of anemones that are their home. This incredible ecosystem is made up of thousands of coral colonies teeming with vibrant plants and animals, each playing a special role in this captivating community. Did you know that the reef is **so** big that it can be seen from space? It's true! But just like anything beautiful, the Great Barrier Reef's **creatures** help to stay safe and healthy. Human activities like pollution and climate change can harm **its** delicate balance, so scientists and conservationists are working hard to protect this breathtaking place.
**Объяснение:**
* A: Подходящее слово "is", так как речь идет о факте.
* B: "fish" - подходящее слово, соответствующее контексту.
* C: "so" - подчеркивает, насколько большой риф.
* D: "creatures" - живые существа рифа.
* E: "its" - притяжательное местоимение, указывающее на принадлежность delicate balance рифу.