What is the below Rebus indicate?

What brings you down but never up?

Move four matchsticks to the below square to form three squares?

What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

There are nine letters in the below-given diagram. You have to form a nine-letter word using these letters.

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 the company name in the pictogram below?

What four weights can be used to balance from 1 to 30 pounds?

Can you identify the Oscar-winning movie from the rebus below?

There is a jar in which there are two types of candies.
20 blueberries and 16 strawberries. You perform the following steps:
1) You take out two candies.
2) If the two candies are of the same flavour, you add a blueberry one otherwise, you add the strawberry one.

You repeat these two steps till there is just one candy remaining in the jar. Which flavoured candy will be left?