I urgently need to check the following statements concerning global warming.

1.I think it is important to protect our planet for the future generations.
2.We must respect the environment instead of polluting it.
3.I agree with Sophia that teenagers can change older people’s attitude, for example using electrical cars.
4.When older people die, the world will still be lived. (inhabited?)
5.Young people need to discuss global warming . I’m interested in global warming and I have already done activities close to this.
6.I wish we could use electrical cars to move around because they don’t harm (pollute) the environment.
7.We can recycle in our school and explain everyone how it is important to protect the earth.
8) We can change older people’s attitude talking to them about how to save the environment.It is important that older people understand that the environment is under threat. (It's important for them to understand'?)

1. OK

2. OK

3. I'd say "electric" not "electrical."

4. Use "inhabited."

5. I don't understand "close to this."

6. "electric"

7. "...explain to everyone..."

8. "...older people's attitudes by talking ..." -- <space between sentences> [wording in parentheses is OK].

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http://www.misscellania.com/miss-cellania/2011/4/9/the-green-thing.html
Be sure you're paying attention to this and make it clear exactly who the "older people" are in your sentences. That's a sweeping (hasty?) generalization, and generalizing is a weak part of any argument!
http://writingcenter.unc.edu/resources/handouts-demos/writing-the-paper/fallacies#section-4

To check the statements concerning global warming, you can follow these steps:

1. Read each statement carefully and evaluate if it aligns with the understanding and actions needed to address global warming.

2. Consider the scientific consensus on global warming. This can be done by referring to reputable sources such as research papers, scientific organizations (e.g., IPCC), and government reports focused on climate change.

3. Assess if the statements reflect the principles of sustainability and environmental protection. Reflect on whether they advocate for reducing greenhouse gas emissions, promoting renewable energy, conserving resources, and adopting sustainable practices.

4. Determine if the statements emphasize the importance of collective action and creating awareness about climate change. Consider whether they encourage individuals to actively engage in discussions, education, and taking responsibility for addressing global warming.

Based on these steps, here's an analysis of each statement:

1. This statement recognizes the importance of protecting the planet for future generations, which aligns with addressing global warming. It reflects an understanding of the long-term consequences and sustainability.

2. This statement promotes respecting the environment instead of polluting it, which is crucial for combating global warming. It acknowledges the negative impacts of pollution and reflects an environmentally conscious mindset.

3. This statement supports the idea that teenagers can influence older generations' attitudes, particularly through initiatives like using electric cars, which can help reduce greenhouse gas emissions. It recognizes the potential for intergenerational dialogue and collaboration.

4. This statement acknowledges that even after older generations pass away, the world will still be inhabited. Although not directly related to global warming, it suggests that the responsibility of taking care of the planet falls on the younger generations.

5. This statement emphasizes the importance of young people engaging in discussions about global warming. It recognizes personal interest and involvement in activities related to addressing climate change.

6. This statement expresses a desire for using electric cars, which aligns with reducing pollution and greenhouse gas emissions. It reflects an understanding of the environmental benefits of electric vehicles.

7. This statement encourages recycling in school and spreading awareness about the importance of protecting the earth. It reflects an understanding of sustainable practices and the role of education in promoting environmental stewardship.

8. This statement suggests that older people's attitudes can be changed by discussing how to save the environment. It recognizes the importance of raising awareness and fostering understanding among older generations about the threats faced by the environment.

Overall, these statements demonstrate awareness and concern about global warming and highlight the importance of taking action to address it.