英语翻译Do you know how many kinds of earthworms there are?There
英语翻译
Do you know how many kinds of earthworms there are?There are about 1800 kinds in the world!They can be brown,purple,red,blue,green.They can be as small as 3 cm long and as large as 3 m long.The garden earthworms we have in Canada are 10 cm to 20 cm long and are a pink brown color.
The best time to see earthworms is at night,especially a cool,damp night.That’s when they come up from their burrows(地洞)to hunt for food.Earthworms don’t like to be in the sun.That’s because they breathe through their skin,and they can’t breathe if their skin gets too dry.So they try to stay down in the earth while the sun is out.You may have noticed that if you happen to dig up an earthworm,it soon burrows back into the earth.Sometimes earthworms don't make them back into the earth.When that happens,you'll see a dead worm all dried up by the sun.Earthworms must come out of the earth if it rains a lot,because they can't breathe in their flooded burrows.What a dangerous life!