Question

what effect is produced by autumn to the birds​

Answer 1

Answer:

They fall off of the trees in autumn so new trees can start to grow in the spring. In autumn, the birds migrate south. To migrate means moving from one place to another for a long time. In autumn, some animals, like bears, hibernate for the winter.

Answer 2

Answer:

Sandwiched between blazing summer and chilly winter, autumn is the "cooling off" season. Nighttime arrives earlier, temperatures begin to drop and most vegetative growth decreases. Animals begin to prepare for the dearth of food that generally comes during the winter, gathering supplies or traveling to warmer climates.

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