1

The paragraph exists in this website:
http://news.discovery.com/animals/why-do-some-turtles-breathe-out-of-their-butt-140617.htm

And yet, when scientists placed a small amount of food coloring in the water near these turtles, they found that the turtles were drawing in water from both ends (and sometimes just the hind end.)

Here is what I can understand:

And yet, when scientists placed a small amount of food coloring in the water near these turtles,

I think this means: Scientists put food in the water near turtles.

What is the meaning of turtles were drawing? I don't think that turtles can draw paintings on a paper!!

The word hind means back or behind is that correct?

2

In your excerpt

And yet, when scientists placed a small amount of food coloring in the water near these turtles, they found that the turtles were drawing in water from both ends (and sometimes just the hind end.)

The scientists coloured the water with food colouring (nontoxic and safe colouring) to be able to see where the water went (since water itself is colourless). Usually red or blue is used to follow water movements.

To draw water is to gather or collect water

He drew water from the nearby well.

The scientists found that water was used from both the front and back (hind) ends.

  • 1
    We could also mention to draw blood, not just water. – Cascabel Feb 21 '16 at 17:45

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