The plane broke into three pieces.

That the mast broke on your model ship, sir.

And as conditions change, minerals sometimes break down.

Physical weathering, uh...that's when exposure to the elements over time causes a rock to break up and eventually disintegrate.

After microorganisms have broken down the cellulose, we're left with two things: the microbe's waste and the more resistant plant material that microorganisms can't break down easily.

Thing is, though, we are not too good at producing the enzymes that break down cellulose.

And as conditions change, minerals sometimes break down.

As you know microbes are micro-organisms like bacteria that help to digest or break down food.

Researchers Robertson and Mann note that when the ice begins to break up, the wind and tides may move the ice around, scouring the bottom and uprooting the eelgrass.

Well, in autumn, a whole lot of other chemical constituents of the leaf break down as well.

I don't mean they are totally destroyed 'cause actually they break down into other different chemicals that the tree can reabsorb from the leaves and reuse later.

A fungus secretes enzymes into the soil, enzymes that break down, decompose organic material in the soil.

APS digestion uses anaerobic bacteria, ones that thrive in the absence of oxygen, to consume, to break down organic material.

And aren’t anaerobic bacteria used to break down the sludge?

OK. So how do you take plant fibers that individually you could break with your hands and turn them into a rope that’s strong enough to moor a ship that weighs thousands of tons?

A fifteen-speed racing bicycle is more likely to break down than a child's tricycle.

Did you break your toy?

After cooled, they break the molds, and inside there were the glass disks.

So that many of the plays have both qualities: a serious dramatic side and comedic scenes with the clowns that break the drama.

The bacteria break the solids down into acids and hydrogen gas.

But the spectral lines would break it up at different places, making different patterns.

The camera broke.

The effects of wind and water then break down the masses of uplifted rock, producing sediment that is transported by water downward to ultimately form layers in lakes, seashores, or even oceans.

As you know microbes are micro-organisms like bacteria that help to digest or break down food.

the Christmas break

I’m going home for spring break and my family lives in the country, far from the near city.

I find it a great way to unwind during the summer break and what keeps me coming back to it are the anecdotes, fascinating anecdotes, that give you glimpses in the artist's private lives, their dreams, their fears, their virtues, their vices.

No problem, Laura. How was your summer break?

a break in the fence

The event that precipitated the break with the mother country was the revolution of 1820 in Portugal.

With color intensified in one part of the flower petal and faded in another, this is called color breaking.

Careful, you'll break it!

It's a bad break.