Best easy riddles for teens with simple answers

I hiss. I can be poisonous. I am long. I have a forked tongue. What am I?

You can see me in water, but I never get wet. What am I?

I have no life, but I can die, what am I?

What always comes into a house through the keyhole?

I have seas without water. I have forests without wood. I have deserts without sand. I have houses with no brick. What am I?

I'm tall when I'm young and I'm short when I'm old. What am I?

What happens when you throw a blue rock into the yellow sea?

Someone said you sounded like an owl.

I eat other animals. I have a big mouth. I am green. I live in the water. Who am I?

What has a neck but no head?