Why is a river so rich ?

A word I know,
Six letters contain,
Subtract just one,
And twelve is what remains.

1. How can we put an elephant in the refrigerator?
2. How can we put a Giraffe in a refrigerator?
3. The king of the jungle invites all the animals to a party everyone comes except for one animal, which animal?
4. You come to a crocodile-infested lake, you can't go around it, you can't co under it and you can't go over it, how do you get across?

I cry without having a voice.
I fly without having wings.
I bite without having teeth.
I whisper without a mouth.

Who am I?

Rearrange the letters in "new door" to make one word.

A sea diver is a real show-off. He showed everyone that he can hold his breath underwater for 15 minutes.

I went to the diver and told him that I can be underwater for double the time i.e 30 minutes.
He responded that he will give me 100$ if I would be able to do it. I won 100$.

What did I do?

What has one eye, but can’t see?

What is 3/7 chicken, 2/3 cat and 2/4 goat?

How is the moon similar to a dollar?

Which city is three-fifths chick two third cat and 50% goat?