How can animals know the weather?

(1) The change of weather directly affects the life of animals. Some animals with keen senses can often detect changes in the weather in time and prepare for life in advance. When ants move, it rains heavily. Before the rainstorm, due to the increase of humidity in the air, the water absorbed by the soil increased greatly. Therefore, the ant nests built in the soil become wet. In order to avoid flooding, ants often move before heavy rain. The loach is tumbling, and heavy rain is coming. On sunny days, the water contains a lot of oxygen, and the loach lives quietly at the bottom of the water. Before the arrival of heavy rain, the oxygen content in the water decreased, and the loach found it difficult to breathe, so it kept rolling up and down in the water. Spiders weave webs, and it will clear up after a long rain. It became longer when it rained, and the spider web was smashed by the rain. But when the weather will clear up, the air will no longer be dull, all kinds of small flying insects will become very active, and spiders will also start to cast nets to prey on flying insects. It was sunny when the bees came out of the nest. After the long rain cleared up, the air pressure began to rise, the humidity in the air gradually decreased, and pollen appeared in the stamens of plants, so bees went out to collect nectar. Frogs croak and heavy rain is coming. On a clear night, the air is fresh, all kinds of insects come out to move, and frogs hunt and refresh themselves, so they sing loudly and stay up all night. The heavy rain is coming, the air is dull, frogs are restless and often sing in a low hoarse voice. After a few phone calls, they stopped barking. (2), 1, Yan: Yan, go on a sunny day; Swallows fly low and report on rainy days; Take a bath, it will rain; Yan lie prone, it's raining. Second, sparrows: sparrows are called sunny and pigeons are called rain; When birds eat water, it will rain; Birds take a bath, and the rain is not small; The bird wipes its mouth. It's going to rain. Third, geese: geese fly to Haikou, and the weather is fine; The geese flew inland, and there was a big storm; When geese fly south, the sky will turn cold; When geese fly north, the weather will get warmer. Fourth, cicadas: cicadas sing in sunny days, but not in rainy days; Cicadas sing in the rain to forecast sunny days; Cicada chirps, and the rainy season stops early; Cicada sings early and ends, and turns cold in early autumn. 5. Dragonfly: Dragonfly is tall and tanned; Dragonfly is very low, with brown clothes, dragonfly water, continuous drizzle; Dragonflies circled thousands of times in the sky, but it rained for three days. 6. Loach: Loach is quiet, sunny, loach moves, and the weather changes; The loach jumps fiercely, and the wind and rain are coming; The loach is foaming, and it's going to rain. Frog: It will clear up after a long rain. Listen to frogs for a long time, and the wind and rain will come; The rain stopped listening to frogs, and the weather was not clear; Frogs croak, and heavy rain is coming.