how many kinds of poputions are there?

how many kinds of poputions are there? how many kinds of pollution are there? How many kinds of animals are there in the passage? How many kinds of animals are there in the w There are many kinds of food… 填空：There are many kinds of movies_see. .There are many kinds of animals是什么意思 there are many kinds of i----animals kinds many there are of clouds There are many kinds of flower s---- There are many kinds of metals,___? there are many kinds of metals _________________.