A jellyfish has a soft body. It floats in the water. What is a jellyfish made of? A. Water and air B. Water and salt C. Water and jelly D. Water and sugar 相关知识点: 试题来源: 解析 C。水母是由水和胶状物组成的。选项 A 水和空气、选项 B 水和盐、选项 D 水和糖都不是水母...
A. sink in the water B. move up and down in the water C. stay on the surface of the water D. swim quickly in the water 相关知识点: 试题来源: 解析 C。“float in the water”意思是漂浮在水中,也就是停留在水面上,即“stay on the surface of the water”。A 选项是沉入水中,B 选项...
As you make your way to the beach this summer, you might want to brush up on your knowledge of one of the ocean’s most simple but elegant creatures – the jellyfish. They are comprised of 95 percent water and have just a basic nervous system that allows them to smell, detect light,...
How did members of the subphylum Urochordata and the phylum Chordata evolve into vertebrates? Do members of the phylum Chordata have limbs? How many antennae do members of the phylum Crustacea have? What phylum do turtles belong to? What is the percent of water found in marine organisms?
The percentage (total amount of water content) in the body by mass can range from 78% in infants to as little as 45% in the elderly. Total body water (TBW) is made up of the percentages of water present in the body’s various fluid compartments. Accordin
jellyfish populationsin 62 percent of the regions analyzed, including coastal areas of Asia, the Black Sea and the Mediterranean Sea. “Our study confirms these observations scientifically after analysis of available information from 1950 to the present for more than 138 different jellyfish populations...
What fish live in the Salton Sea? What food chain level are clownfish? How long can amphibians stay underwater? Are clownfish amphibians? What kind of fish live in the Great Barrier Reef? What is a puffer fish's habitat? What kind of fish live in Lake Balkhash? What percent of fish li...
National Geographic photographer Brian Skerry has been diving in the Gulf of Maine for more than 40 years. After learning these waters were a harbinger of climate change, he set out to document the rapid shift and its ripple effects.
The rash, also called seabather’s eruption, is a form ofdermatitiscaused by jellyfish larvae in the water. The larvae belong to two marine species that sting: the thimble jellyfish (Linuche unguiculata) and a sea anemone (Edwardsiella lineata). They’reparasitesthat feed off of fish, not...
What are coral reefs made out of? Coral Reefs: Coral reefs are one of the busiest underwater ecosystems. Many fish come to the coral reefs to feed and many people go diving at coral reefs for the views. And scientists are continually studying them. ...