No one wants to have it, but if one got it, he does not want to lose it. What is It?

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

Who am I?

What do you answer even though it never asks you questions?

Can you solve the below tricky visual equation?

One night, a woman receives a call from the police. They tell her that her husband was murdered and that she should come to the crime scene as soon as possible. The woman drops the phone, shocked, and drives 20 minutes to the crime scene. As soon as she reaches the crime scene, the police arrest her and she is convicted of murder. How do the police know she committed the crime?

Can you find the missing letter in the sequence?
S - T - I - L - ? - T - F - Y - C

Alex opened 24 presents
Jonah opened 8 presents
Clara opened 1 present

Can you find out how many presents were opened by Candy?

In a jungle where there are no street lights or any other artificial source of lights, I notice a black snake crossing the road.
How did I get sight of the snake?

No matter how little or how much you use me, you change me every month. What am I?

What is in seasons, seconds, centuries and minutes but not in decades, years or days?