Eicosane-d42 has properties (chain length, molecular weight) similar to CHCs that occur naturally on the host ants, thus we conclude that the hosts' natural surface compounds are acquired by the same mechanism.
Grass has always been a natural surface for me.
What outdoor sport isn't better on a natural surface?
He is, however, just learning how to field on a natural surface.
No additional feeding was practiced and water was available throughout the year by natural surface water.
But with his attacking game, grass is a natural surface for him.
The Mooreland Glen site, with its gentle slope and broad southeastern orientation, allows for natural surface drainage, solar orientation and protection from cold winter winds.
There are also now two fields for soccer, lacrosse and field hockey, with an artificial surface for multiple sports and a new natural surface field.
He has an impression of striding along a natural surface, along some coastal wilderness, on a smooth slab of basalt causeway he vaguely recalls from a childhood holiday.
Its natural surface is not the well-trimmed lawns of soccer or the noble clay of tennis, but the yielding sponge of the beery carpet.
Ozonation of natural surface water increases the concentration of oxygen-containing low molecular weight compounds.
