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单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,Revealing Nature,Komodo dragon:,(,科莫多巨晰）,Komodo dragons were first encountered by Western researchers in 1910. The researchers said the ancestor of the Komodo dragon most likely evolved in Australia and spread westward, reaching the Indonesian island of Flores 900,000 years ago.,The Komodo dragon is the largest lizard in the world. It can grow to three metres in length and can weigh about 135 kilograms. Despite its size and weight, it can run for short distances at up to 20 kilometres per hour.,Duck-billed platypus,（,鸭嘴兽,）,The first scientists to examine a preserved platypus body judged it a fake in the late 18,th,century. The oldest discovered fossil of the modern platypus dates back to about 100,000 years ago.,The duck-billed platypus is a small egg-laying mammal (up to 60 cm in length) found only in Eastern Australia including Tasmania. As its name suggests, it has a mouth that looks like a ducks bill, while its thick fur and flat tail are similar to those of a beaver,（,海狸,）,.,Nautilus,（鹦鹉螺）,Fossil records indicate that the nautilus has survived relatively unchanged for around 500 million years.,That is why it is often given the name “living fossil.”,1. What do you know about these animals? What makes them special?,They are all species that exit _ _years on earth; They are _ and _,2. What other similar animals do you know about?,Share your knowledge with the class.,thousands,of,old,rare/unusual,How seeds travel?,V,传播，移动,How can seeds travel?,Seeds cane travel great distances by being carried by the _ , upon the _, _ or _.,wind,water,animals,people,2. How can this benefit plants?,Seeds have a _(better/worse) chance at life when they are _(closer/further) away from their parent plant. Growing too _(far/close)to the parent plant means seeds might not get enough_, _and nutrients from the _. A species is _(more/less) likely to _ if its members are more _(closely/widely) spread,.,better,further,close,sun,water,soil,more,survive,widely,Example,Carried by,Feature,How,Maple seeds,Wings that _ and keep them in the _ for _, allowing them to _ in all kinds of places,Depending on the _ of the wind, they can sometimes travel for _ _ kilometers,Coconuts,Its _ shell allows it to _ on the water for a long time.,When a coconut _from a tree onto the beach, the sea _ it _ and carries it away to _somewhere else,Cherry,Many plants _ fleshy fruits that animals like to _,Animals _especially _, so the seeds can easily end up a _way from the parent plant.,Example,Carried by,Feature,How,Maple seeds,Wings that _ and keep them in the _ for _, allowing them to _ in all kinds of places,Depending on the _ of the wind, they can sometimes travel for _ _ kilometers,Coconuts,Its _ shell allows it to _ on the water for a long time.,When a coconut _from a tree onto the beach, the sea _ it _ and carries it away to _somewhere else,Cherry,Many plants _ fleshy fruits that animals like to _,Animals _especially _, so the seeds can easily end up a _way from the parent plant.,wind,ocean,currents,animals,spin,air,longer,land,strength,hundreds,of,hard,float,falls,picks,up,grow,produce,eat,move,birds,long,
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