Two in a corner, one in a room, zero in a house, but one in a shelter. What is it?

What do you see in the image below

You see me once in June, twice in November, and not at all in May. What am I?

Open a Laptop which is password protected. Hint for the password is given as below:

1 mobile 3 books 2 Boards 1 night 4 balls 2 lighters 1 ghost 1 hat 3 watches

By using 'because' continuously three times, can you make an English statement ?

I am not alive, but I grow; I don't have lungs, but I need air; I don't have a mouth, but water kills me. What am I?

I possess a head

I flaunt a tail

But I don't have mouth or legs

Can you find out who I am?

A Scientist was fifty years old in the year 2000 but he was forty years old in the year 2010. How can this be possible?

PS: It has a logical answer.

What common phrase is represented by the below lines

Easy going:
Weak, 'I'm going.'
Tough, 'I'm staying.'

Medium going:
Weak, 'I'm going.'
Tough, 'I'm staying.'

Tough going:
Weak, 'I can't do it, I'm staying!'
Tough, 'Let's get going.'

I never stop running even when I standstill. If I am formed by joining two identical bodies together, can you guess who I am?