These types of puzzles are known as charades. What you have to do is to find two words that are referred to in the first stanza and the second stanza and put them together to form the third word in the third stanza.

Just for example, if my first refers to 'off' and my second refers to 'ice', then my whole will be the 'office'.

My first is present - future's past -
A time in which your lot is cast.

My second is my first of space
Defining people's present place.

My whole describes a lack of site -
A place without length, breadth, or height.

Count the number of triangles in the picture below:

What work can one never finish?

I know a nine-letter word having only one vowel.
Do you ?

What two things can you never eat for breakfast?

What does this Rebus Picture mean?

A cricket has 6 legs, a squirrel has 4 legs and a spider has 8 legs.

In a local zoo, it was found that the total number of legs is 612. Also, there are equal number of each of the above animals/insects.

Can you find out how many animals are there in the zoo?

What kind of tree can you carry in your hand?

What word begins and ends with an E, but has only one letter?

How can you spell "White of an egg" in one word?
Hint: I know you can spell coke, poke, and joke.