Plants find it easier to use the lighter isotopes (C) when they convert sunlight and carbon dioxide into food.

The technique analyzes the behavior of relatively lighter and heavier isotopes of nitrogen.

That same water can pass through plants which will absorb carbon dioxide- with a preference for lighter isotopes.

Highly enriched uranium, with a higher percentage of lighter isotopes, is used in nuclear weapons.

When the water is warmer, more of the lighter isotopes are absorbed and incorporated in the otolith.

Water vapor is enriched with light isotopes relative to sea water.

Clouds are depleted of light isotopes relative to water vapor.

Lr is the lightest isotope of lawrencium to be produced to date.

In some cases, an additional rate enhancement is seen for the lighter isotope, possibly due to quantum mechanical tunnelling.

The latter synthesizes the lightest, most neutron-poor, isotopes of the heavy elements.