I urgently need you to check these sentences I have to include in an e-mail.

As far as the project is concerned, I would like to know the opinion of your science teacher. I hope they will help me find the proper words.

1)Thank you for your email of today. I must compliment /congratulate you on your excellent Italian.
2) I'm really glad you both agreed to carry out a project concerning biodiversity (does the word exist) in rivers and other waterways in our own areas.
3) As a matter of fact, our school is already working on a similar project and has just received the funds to buy the necessary equipment (to analyze the water).
4) I therefore believe all our science teachers will be willing to partake in the project.
5) We will be discussing all the details in our next teachers' meeting (which will be held) next Monday. You can assure your French partner that we fully approve of your proposal.

Everything is fine. Nice job.

And yes, "biodiversity" is a word!
http://www.answers.com/biodiversity

Sure, I'd be happy to check those sentences for you. Here are my suggestions:

1) Thank you for your email today. I must compliment you on your excellent Italian.

2) I'm really glad that both of you agreed to work on a project concerning biodiversity in rivers and other waterways in our respective areas.

3) As a matter of fact, our school is already engaged in a similar project and we have just received the necessary funds to purchase the required equipment for water analysis.

4) Therefore, I believe all of our science teachers will be willing to participate in the project.

5) We will be discussing all the details in our next teachers' meeting on Monday. Please let your French partner know that we fully support your proposal.

Just a note, the term "biodiversity" does exist and is commonly used to refer to the variety of life forms in a particular habitat or ecosystem.

To check the correctness and clarity of your sentences, you can follow these steps:

1) Review each sentence for proper grammar and punctuation. Ensure that subject and verb agreement is correct, and that there are no spelling mistakes or typos.

2) Check the coherence and flow of the sentences. Make sure they are logically connected and convey the intended meaning clearly.

3) Consider the audience and purpose of the email. Make sure the tone and language used are appropriate for a professional email.

4) Read the sentences aloud to ensure they sound natural and are easy to understand.

By following these steps, you can ensure that your sentences are accurate, clear, and effective in conveying your message.