Human actions can have a big effect on nature. Sometimes, these effects are harmful, and other times, they can be helpful.

Harmful Effects:

1. Habitat Destruction: Every year, about 1.2 million hectares of forests are cut down. This loss hurts many plants and animals that live there.

2. Pollution: More than 80% of the pollution in our oceans comes from things we do on land. This pollution can be very harmful to fish and other sea creatures.

3. Invasive Species: People often bring new species into areas where they don’t belong. These invasive species are responsible for 42% of the animals and plants that are endangered in the U.S.

Beneficial Effects:

1. Conservation Efforts: Today, around 15% of the Earth's land is protected. This helps many different species thrive and keeps our ecosystems healthy.

2. Restoration Projects: Programs like planting new trees can bring back about 2.2 billion hectares of damaged land. This is good for the environment because it helps store carbon and provides homes for wildlife.

3. Sustainable Practices: Using sustainable farming methods can help nature too. Some studies say that these methods can increase local species by 30%.

Ethical Considerations:

• We have a responsibility to care for nature. This means understanding how important ecosystems are and making sure our actions help keep everything in balance. Being a good steward of the environment involves making smart choices and creating rules that help the Earth while also considering people’s needs.