There are 6000 known species of earthworms. Earthworms breathe through their skin since they do not have any lungs or other respiratory system. The size of an earthworm can range from less than half an inch to approximately 10 feet depending upon the species. ...
That's when they come up from their holes to look for food. Earthworms don't like to be in the sun because they breathe(呼吸) through their skin, and they can't breathe if their skingets too dry. So they try to stay down in theearth while the sun is out. You may have notice ...
4. Why must earthworms come out of the earth if it rains a lot?5. When can we easily find earthworms? 相关知识点: 试题来源: 解析 IV. 1. About 1,800. 2. It means rainy.3. Because they breathe through their skin, and theycan't breathe if their skin gets too dry.4. Because ...
Some people assume worms come to the surface so they do not drown in their burrows. However, "worms don't have lungs like we do,"Thea Whitman, a soil scientist at the University of Wisconsin-Madison, told Live Science. Instead, earthworms absorb oxygen through their skin, and they can do...
The best time to see earthworms is at night, especially a cool,dampnight. That’s when they come up from their holes to look for food. Earthworms don’t like to be in the sun because they breathe (呼吸) through their skin, and they can’t breathe if their skin gets too dry. So ...
Are earthworms reptiles or amphibians? Do amphibians have scales made of keratin? Do amphibians shed skin? Are amphibians amniotes or anamniotes? Can amphibians live in the desert? Can amphibians have more than 4 legs? Do amphibians breathe episodically?
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 theearth while the Sun is out. You may notice that if you happen to dig up an earth-worm, it soon burrows back into the earth. Sometimes earthworms don't...
That's when they come up from their burrows(地洞) to ___1___ food. Earthworms don't like to be in the sun.That's because they breathe 2 their skin, and they can't breathe if their skin gets too dry.Earthworms must come out of the earth if it rains a lot, because they can...
Worms take in moisture with their food but do not drink in a typical way. Worms breathe through their skin rather than lungs, and water is evenly distributed around the body, carrying oxygen around their body. Do worms live when cut in half?
Are earthworms reptiles or amphibians? Do amphibians breathe continuously? Do amphibians have segmented bodies? Do amphibians and reptiles have lungs? Do amphibians and reptiles have scales? Is a lungfish an amphibian? Are horned lizards amphibians?