Trắc nghiệm Đọc hiểu Unit 10 lớp 9 Planet Earth

A hundred years ago, jaguars ranged from the south-western United States to Argentina, in South America. Today their territory has shrunk by more than half, and they live mostly in the Amazon rainforest. And jaguars aren’t the only animals losing their homes - according to the International Union for Conservation of Nature, habitat loss is the main threat to about 85 percent of all endangered plant and animal species.

Tropical rainforests cover only about 7 percent of Earth’s land, but they’re home to an estimated half of all known plant and animal species. Most experts agree that about 80,000 acres disappear every day when trees are cut down for lumber and land is cleared for farms. Trees also play an important role in absorbing the carbon dioxide that contributes to climate change. Fewer forests mean that more greenhouse gases remain trapped in the atmosphere.

Grasslands, underwater habitats, and wetlands are also at risk of habitat loss. For instance, the World Wildlife Fund estimates that about half of the world’s wetlands have disappeared in the last hundred years due to being drained for farmland or other industries. That means less space for animals to feed, breed, and raise their young.

Finding a balance between what humans and animals need will help prevent habitat destruction. Some scientists think that if we put aside half of Earth’s land and water for nature, we could save up to 90 percent of all species. In the meantime, your everyday actions can build a better planet.

Planet Earth is the third rock from the sun and the only known planet in our solar system. Unlike any other planet we know, Earth provides the perfect conditions for life to exist. From the hot deserts to the icy poles, Earth is home to a diverse range of habitats, each full of unique life forms.

These life forms can be broadly divided into two groups: flora and fauna. Flora refers to all the plant life on Earth, from the tall trees in the rainforest to the very small algae floating in the oceans. Fauna, on the other hand, includes all the animal life, from the majestic lions roaming the grassland to the microscopic insects hidden in the soil.

All these plants and animals are interconnected in a complex web called the food chain. Plants, using sunlight and nutrients, produce their own food. Herbivores, or plant-eaters, consume these plants for energy. Carnivores, or meat-eaters, then feed on the herbivores. This cycle ensures the survival of various species and maintains a healthy balance in Earth's ecosystems.

Planet Earth is truly a remarkable haven. Its diverse habitats, vibrant flora and fauna, and interconnected food chain all contribute to making it a haven for life. It's our responsibility to protect this incredible planet and ensure its continued existence for future generations.

(Adapted from learning A-Z https:/fwww.readinga-z.comfbook.phpdid--828)