Random Puzzles 

Workings

Hint
Each sentence hides a single word.

Answer
Badgers rapidly excavate a mound.

Reasoning
The initial letters of the words spell BREAM, a fish. The other sentences all spell birds.
SWAN  = Sam wanted another newt. EAGLE = Every artistic giraffe likes elephants. BREAM = Badgers rapidly excavate a mound. WREN  = Wild rabbits enjoy nature. DUCK  = Dale understood cute kittens. CRANE = Casual restless aardvarks need exercise.

Workings

Hints
The first letters of the words are: E, R, I, A, M.

Answers
ent + ertainm + ent = entertainment red + iscove  + red = rediscovered ing + row     + ing = ingrowing ant + ioxid   + ant = antioxidant mic + rocos   + mic = microcosmic

Workings

Hint
One inch = 25.4 mm.

Answer
Millimetres in a mile.

Reasoning
One inch = 25.4 mm.

So:

1 mile = 1760 yards = 1760 x 3 feet = 1760 x 3 x 12 inches = 1760 x 3 x 12 x 25.4 millimetres = 1,609,344 mm in 1 mile.

And:

2 kilometres = 2000 metres = 2000 x 100 centimetre = 2000 x 100 x 10 millimetres = 2000 x 100 x 10 ÷ 25.4 inches = 2000 x 100 x 10 ÷ 25.4 x 16 = sixteenths of an inch ≈ 1,259,843 sixteenths of an inch in 2 kilometres.

Workings

Hint
It's nothing to do with the word lengths, or vowels (AEIOU).

Answer
Salt.

The initial letters of the words are spelling the word 'PUZZLES'.