What does this Rebus Picture mean?

I welcome the day with a show of light, I stealthily came here in the night. I bathe the earthy stuff at dawn, But by noon, alas! I'm gone.

A man dies of old age on his 25 birthday. How is this possible?

A Doctor always sneezes before the rain. Doctor sneezes, Will it rain?

You can find some missing letters in the picture. By placing two particular letters in the spaces, you can form a nine lettered word beginning from one of the corners and going clockwise direction to the middle. Can you find out the letters and the word?

Christina is older than Kareena and Karishma. Katrina is older than Karishma and younger than Kareena. If Kareena has a brother named John, who is older than Christina, who's the youngest?

Find three numbers such that

* When we multiply three numbers, we will get the prime numbers.
* The difference between the second and the first number is equal to the third and second.

It has a long neck, A name of a bird, Feeds on cargo of ships, It's not alive,

What is it?

Can you find out the remainder when 3^300 is divided by 5?

Rectify the following equality 101 - 102 = 1 by moving just one digit.