cold-adapted plants ice outside cells shoots

Some plants keep ice outside their cells

In some cold-adapted plants, tissue barriers stop ice from spreading into the shoots. Water inside the cells can stay supercooled, or liquid below freezing. But ice outside the cells can still dehydrate the plant.

Much ancient Indian art disappeared

Much ancient Indian art was probably made from materials such as wood that rot over time, so it has disappeared. What survives is mostly religious sculpture made from longer-lasting materials, along with coins.

A deaf child can create a home sign system

A deaf child without access to an established sign language may create signs used within the family and develop a few rules for combining them. Without support or feedback from a wider community, the system does not become a full language.

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cold-adapted plants ice outside cells shoots

Some plants keep ice outside their cells

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