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Choose the correct answer. C for Causes that destroy food chains and R for Results of damaging food chains.
1. Deforestation removes important plants that animals need for food.
2. Introducing new animals can hurt local animals by taking their food.
3. Some animals may not have enough food to live.
4. Too much fishing can take away food for other sea animals.
5. Certain animals may become too many because there are no predators.
Choose the correct answer. C for Causes of habitat loss and R for Results of habitat loss.
1. Fewer animals can lead to an unbalanced environment.
2. Building roads and cities where animals live.
3. Waste from factories and homes pollutes the land and water.
4. Some animals may not find enough food and become weak.
Choose the correct answer. C for Consequences of illegal hunting of animals and S for Solutions to stop people from illegally hunting animals.
1. The balance of nature is destroyed.
2. Ecosystems can become weaker and less healthy.
3. Make laws that punish illegal hunting.
4. Increase the number of forest rangers to watch for poachers.
5. Animals may disappear from their natural homes.
Choose the correct answer. R for Reasons why grasslands are important and P for Problems affecting grasslands now.
1. Grasslands are being turned into roads and buildings.
2. They help prevent soil erosion by holding the soil in place.
3. Many species of plants and animals are disappearing from grasslands.
4. Many species depend on grasslands for shelter and food.
5. Climate change is making grasslands drier and less healthy.
Water pollution has serious effects on natural habitats. It damages the quality of water, making it harmful for plants and animals that depend on it. ___________
a. Plastic waste is another big problem because it can harm animals if they eat it or get stuck in it.
b. Chemicals from factories and farms poison fish and other marine creatures.
c. Without clean water, plants cannot grow properly, disrupting the food chain.
Landforms are natural shapes and features found on the Earth's surface. They include mountains, valleys, plains, deserts, and rivers. ___________
a. These landforms are important because they provide habitats for plants, animals, and humans.
b. Each landform is unique and has different characteristics.
c. For example, mountains are high and steep, while plains are flat and wide.
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Pollution from factories and farms introduces harmful chemicals into the environment, killing fish, plants, and other organisms. ___________
a. This disrupts the food chain because predators lose their sources of food.
b. Without suitable habitats, animals and plants cannot survive, leading to the collapse of food chains.
c. Deforestation is another significant cause, as cutting down forests removes habitats for many species.
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The disruption of food chains has harmful effects on nature. One effect is that animals lose their food sources, which can lead to their extinction. ___________
a. Another effect is that ecosystems become unbalanced because every species plays a key part.
b. If predators like wolves are removed, the number of animals like deer can grow too much, causing damage to plants.
c. For example, when small fish are caught in large numbers, bigger fish that rely on them may also die.
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Habitat loss happens because of many reasons, and two main ones are deforestation and pollution. Deforestation happens when people cut down trees to use the land for farming or building houses. ____________
a. For example, factories release waste into rivers, making the water unsafe for fish and other wildlife.
b. Pollution is another major cause because chemicals in the air, water, or soil harm plants and animals.
c. This destroys the homes of animals and makes it hard for them to find food or shelter.
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Habitat loss causes serious problems for wildlife and the environment. One result is that animals lose their homes and cannot find enough food, which leads to their death or extinction. _____________
a. Another result is that plants are lost, which changes the natural balance of ecosystems.
b. For example, when forests are destroyed, many birds and monkeys have no place to live.
c. Without plants, the soil becomes poor, and farming becomes difficult.
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There are ways to stop people from poaching and protect animals. One solution is to make stricter laws and give heavy fines to those who hunt animals illegally. ____________
a. This can make people think twice before breaking the rules.
b. If they have a good income, they are less likely to poach animals for money.
c. Another solution is to create more jobs for people living near wildlife areas.
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