Using eight eights and addition only, can you make 1000?

I am something people love or hate. I change peoples appearances and thoughts. If a person takes care of them self I will go up even higher. To some people I will fool them. To others I am a mystery. Some people might want to try and hide me but I will show. No matter how hard people try I will Never go down. What am I?

In the given figure, you can see that four match sticks are used to form a square. Can you form five squares by using six matches?

If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?

Can you find a seven digit number which describes itself. The first digit is the number of zeros in the number. The second digit is the number of ones in the number, etc. For example, in the number 21200, there are 2 zeros, 1 one, 2 twos, 0 threes and 0 fours.

Can you find out the missing number in the grid?

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?

Can you find out the next digit in the following series ?

0, 0, 1, 3, 2, 6, 3, 9, 4, 12, 5, ?

What jumps when it walks and sits when it stands?

I have cities, but no houses. I have mountains, but no trees. I have water, but no fish. What am I?