efficient

Cycling is the most efficient form of transport.

The most efficient animal on the planet is the condor.

There were climate changes, of course, and growing aridity and rising population densities may have forced them to intensify the exploitation of cereals, which in turn might have stimulated the development of sickles and other tools and the permanent communities that make agriculture efficient.

It’s actually more efficient for a bear to only eat some parts of the fish and then try catching another one, instead of eating the whole fish. 

Now, I'm guessing it wasn't too expensive or time-consuming for Levitt to come up with this idea, but it was certainly efficient and hugely popular with families.

Unfortunately, this is slow, expensive, and just not very efficient.

It'd be more efficient and therefore cheaper to combine the two steps I mentioned into one.

At the same time, people were moving to the city, partly because of the enclosure movement; that is, the fencing of common fields and pastures in order to provide more compact, efficient privately held agricultural parcels that would produce more goods and greater profits.

At a much larger scale, baleen whales and whale sharks are also efficient filter-feeders in productive coastal or polar waters, although their filtered particles comprise small animals such as copepods and krill rather than phytoplankton.

Therefore, fires had to be small, and cooking methods had to be efficient.

You could make a lot of buildings more efficient with all that money and that would reduce the need for electricity. 

So what are the most efficient bacteria in the process?

It was an artificial ecosystem of animals, woodlots, and crops, whose large, uniform layout made western farms more efficient than the more-irregular farms in the East.

Pioneer species - those that occur only in the earliest stages of colonization - tend to have high rates of invasion because they produce very large numbers of reproductive propagules (seeds, spores, and so on) and because they have an efficient means of dispersal (normally, wind).

If colonizers produce short-lived reproductive propagules, they must produce very large numbers unless they have an efficient means of dispersal to suitable new habitats.

But I think if she had designed this house today, the same biographers would praise her for coming up with a floor plan that emphasized function, efficient function of a house, as well as a design that’s creative and unique.

In 1832, the year of Michael Faraday’s discovery that a changing magnetic field produces an electric field, a young French engineer patented a new and more efficient waterwheel.

The Martian atmosphere is an efficient erosive agent, with Martian winds transporting dust from place to place and erasing surface features much faster than meteoritic impacts alone can obliterate them.

This friction tends to slow the speed of winds, making them far less efficient at dispersing pollutants.

At present, we can make efficient use of only naturally occurring hot water or steam deposits.

As the different families of venomous snakes evolved, the teeth moved forward, becoming larger, and the venom becoming stronger, so the evolution of the obvious venomous snakes, like cobras and vipers, is about the evolution of an efficient delivery system, not so much the evolution of the venom itself.

And this maxim of relevance is quite efficient to use.

Having an efficient means of transportation, well, that helps the Iroquois to form a federation linked by natural waterways.

This was an important innovation, because the camel’s abilities to thrive in harsh desert conditions and to carry large loads cheaply made it an effective and efficient means of transportation.

The engine eliminated water in the mines by driving efficient pumps, which made possible deeper and deeper mining.

It drinks a lot of nectar from flowers and feeds on some insects, but it’s energy efficient too.

It just wasn’t very efficient.