Why do earthworms come to the surface when there's a heavy rain?

Answer 1

so they don't drown

Answer 2

"Earthworms can survive for several weeks under water providing there is sufficient oxygen in the water to support them. They surface as a response to high relative humidity after rain They can move around safely without dehydrating. One theory is that surfacing before and during heavy rains is an evolutionary behavioral adaptation enabling them to be dispersed."

Answer 3

"Earthworms can proceed to exist for countless weeks shrink than water offering there is adequate oxygen interior the water to help them. They floor as a reaction to intense relative humidity after rain they are waiting to bypass around exact with out dehydrating. One concept is that surfacing until now and by using way of heavy rains is an evolutionary behavioral version allowing them to be dispersed."

Answer 4

Earthworms have to have oxygen; if they're underground and it rains heavily, they will drown if they don't come up. Thus, when it rains enough to saturate the ground, you'll very likely see earthworms.

Answer 5

earthworms need a lot of moistude.when it dry they stay under d soil for moisture.but wen its raining,they come out to get more moisture.

Answer 6

because their tunnels fill with water, and if they don't surface, they will drown. sadly, many of them get crushed or washed away in storm drains when they do come up.

Answer 7

Because they want to suntan after a time spent swimming

Answer 8

because they would drown if they stayed underground while the earth is filling up with water.

Answer 9

They're worns, not fish. They want to breathe.

Answer 10

Because they'll drown?