I have written to the Queen about about saving the planet. The letter is here. And to the Governor General of Australia here.
The Queen also has an organisation to save the forests. You can read more about it and join here: https://queenscommonwealthcanopy.org/ and the Commonwealth Forestry Association here: http://www.cfa-international.org/
The Queen does not have an email address. The Governor General has an email contact form here: https://www.gg.gov.au/email-contacts and his telephone and fax numbers are below. Please use them!
You can write to Her Majesty or the Governor General at these addresses:
Her Majesty the Queen,
United Kingdom, SW1A 1AA
Contacting The Queen and the Royal Family:
His Excellency General the Honourable Sir Peter Cosgrove AK MC (Retd),
Governor-General of the Commonwealth of Australia,
YARRALUMLA ACT 2600
Tel: (02) 6283 3533
Fax: (02) 6281 3760
Website and Addresses: https://www.gg.gov.au/about-governor-general/contact