They also show how animals depend on other organisms for food.

The animal they form depends on the size.

Many larger animals depend on krill for their own survival.

All animal and human fertility depended on this ritual being acted out.

For all their size, these animals depend on us, and our actions.

Much of the vegetation on which the animals depend has been wiped out by the drought.

Since animals depend either directly or indirectly on plants for food, all life is affected by the variations in weather over the seasons.

Almost all animals in the ocean depend directly or indirectly on these plants.

Many other animals and plants depend on wetlands for survival.

Many animals depend on such a clock to maintain their circadian rhythm.