A. animals that lay eggs B. animals that have feathers C. animals that give birth to live young and have hair or fur D. animals that live in the water 相关知识点: 试题来源: 解析 C。“mammals”的意思是哺乳动物。选项 A 是产卵的动物;选项 B 是有羽毛的动物;选项 D 是生活在水里的动物...
They believe that the cancers of the lungs, the throat and so on may also be caused by air pollution, or chemical poison that is now being used by farmers in large quantities to destroy plant pests and small animals. From the passage we come to know that people may die from().36 ...
and the lining in our lungs is adapted to handle air rather than water. However, there have been experiments with humans breathing other liquids, like fluorocarbons. Fluorocarbons can dissolve enough oxygen and our lungs can draw the oxygen out -- see the last...
any adaptations allowing the fish to survive the dry conditions would have been advantageous.In these rhipidistians,several such adaptations existed.It is known that they had lungs as well as gills for breathing.Cross sections cut through some of the fossils reveal that the mud filling the inter...
beabletosaveourselves.Abetter 12 ofanimalsgivesusabetterunderstandingofourown species.The 13 toprotectanimalsandnatureingeneral 14 thevalueofasociety.Andall animalsplayrolesinnatureandhavearightto 15 .Therefore,Ithinkweshouldtryourbest tosaveendangeredanimals,becausehumanscannotliveontheEarthalone. 30分钟能...
Oxygen is generated by plants in a process called photosynthesis. Carbon dioxide is generated by animals in a process called cellular respiration. Both of these gases are involved in respiration.Answer and Explanation: The lungs absorb oxygen from inhaled air. Oxygen is absorbed into the bloodstream...
Earth's Largest Animals Have you ever wondered what the largest animals on Earth are? It depends on where you look. Oh land, the largest animals are African elephants. What could possibly be larger than an elephant? Well, the blue whale is! Not only is it largest se a animal, it is ...
The world's biggest tropical rainforest, the Amazon Rainforest, also known as the "lungs of the Earth," spans nine South American nations and covers an area of over 6.7 million square kilometers (2.7 million square miles). This lush area of dense foliage an...
Whales are large aquatic mammals that breathe air through blowhole(s) into lungs (unlike fish which breathe using gills). They live their entire lives in water. They are the only mammals, other than manatees (seacows), that live their entire lives in t
Amphibians often have simpler diets and feeding mechanisms, largely consuming insects and small animals, with a primary focus on prey available in or near aquatic environments. 15 Mammals boast a respiratory system that relies on lungs throughout their entire lifespan. Amphibians utilize gills during...