the most diverse country in the world!!

I think it is India. Not seen the whole world, but reading at the conditions you listed, I think it should be India. We have so many languages (over 1000? if we include dialects). For races and ethnicity, we have all kinds. Religions is also another area where every religion is there. Regarding landscape and biodiversity, since India is big we have so much of diversity. We have snow in north, always warm and sunny climate in south, rainy in east, hilly and rugged region in the HImalayan range that stretches from North to North East. Last year one friend from Sri Lanka who's seen many parts of the world commented that India is 100 times more difficult to govern than US cos it's too diverse. Next, I think could be China.

This is a great question. I am very interested in diversity awareness, respect and peace. My guess is that the United States is very diverse. After reading some responses to your question it also sounds like Australia, India, and Israel are also very diverse. I would also like to know in which very diverse country is there also the most equality and respect amongst the diversity?

Australia is a huge country so it has different weather, like in Darwin and Cairns the climate is tropical with it being hot all year round, with a dry season and a wet season. Brisbane has a sub tropical climate. Sydney, Adelaide and Perth have hot summers and cool winters. Melbourne is known for it changeable weather and people joke that it can have four seasons in one day. Sadly bush fires can break out in the summer months and I have known these to happen in the States of New South Wales and Victoria. In the middle of Australia it desert like with hardly any rain. The people that live in Australia range from the aboriginals that have been there before the days of the settlers. The settlers included the convicts from the UK. Since then all sorts of people have migrated to Australia like those from Italy, Greece, New Zealand and Hong Kong. Some people I have met there were born in Australia and others moved there from overseas years ago. The aboriginals have such an interesting tradition and I have seen rock paintings that are amazing. I have met some of these people and heard their dream time stories. Many Australian people have a culture like mine and I fitted in with them really well. They are honest and friendly. The outdoor sort of lifestyle is popular given the agreeable climate. There are Italian and Greek influences in Melbourne which makes a lovely international atmosphere. Japanese language is learned in schools in Queensland and Australia has many business links with Japan. The landscape varies from desert in the middle like around Alice Springs. There are tropical beaches with palm trees in Northern Queensland. There are some places were it snows in winter and so for example is it possible to ski at the Snow Mountains. Tasmania would have stunning lakes and beautiful green hills. The land is dry in the summer around the southern states and territory. I love Australia and it is my second favorite country. Wow! It is so diverse.

I would guess that the US and England are. It's just a guess but we do have quite a large variety here.

Easy :) Israel....hands down. Now before you say yeah right, just listen. Per capita Israel is the most diverse even more so than America. I live in America and studied in Israel. My classrooms were very diverse with peopel from england, france, spain, israel, russia, czech republic, georgia, india, china, japan, korea, ethiopia, egypt, nigeria, jordan, syria, lebanon, canada, latin america countries, u.s. Everywhere I went in jerusalem i never heard the same language or met the same ppl from the same country. It was extremely diverse.