Lion's Mane Jellyfish Quiz

Escape from Unsuitable Conditions Some species can survive unfavorable environmental conditions by escaping from them temporarily. For example, desert animals usually hide underground or in the shade during the hottest part of the day. Many desert species are active at night, when temper- atures are much lower. A longer-term strategy is to enter a state of reduced activity, called dormancy, during periods of unfavorable conditions, such as winter or drought. Another strategy is to move to a more favorable habitat, called migration. An example of migration is the seasonal movements of birds, which spend spring and summer in cooler climates and migrate to warmer climates in the fall. THE NICHE Species do not use or occupy all parts of their habitat at once. The specific role, or way of life, of a species within its environment is its niche (NICH). The niche includes the range of conditions that the species can tolerate, the resources it uses, the methods by which it obtains resources, the number of offspring it has, its time of reproduction, and all other interactions with its environment. Parts of a lion’s niche are shown in Figure 18-6. Generalists are species with broad niches; they can tolerate a range of conditions and use a variety of resources. An example of a generalist is the Virginia opossum, found across much of the United States. The opossum feeds on almost anything, from eggs and dead animals to fruits and plants. In contrast, species that have narrow niches are called specialists. An example is the koala of Australia, which feeds only on the leaves of a few species of eucalyptus trees. Some species have more than one niche within a lifetime. For example, caterpillars eat the leaves of plants, but as adult butter- flies, they feed on nectar. Plants and animals are able to share the same habitats because they each have different niches. FIGURE 18-6 niche from the Old French nichier, meaning “to nest” Word Roots and Origins www.scilinks.org Topic: Niche/Habitats Keyword: HM61029 mb06se_iecs02.qxd 5/24/07 10:25 AM Page 365 366 CHAPTER 18 ENERGY TRANSFER All organisms need energy to carry out essential functions, such as growth, movement, maintenance and repair, and reproduction. In an ecosystem, energy flows from the sun to autotrophs, then to organisms that eat the autotrophs, and then to organisms that feed on other organisms. The amount of energy an ecosystem receives and the amount that is transferred from organism to organism affect the ecosystem’s structure. PRODUCERS Autotrophs, which include plants and some kinds of protists and bacteria, manufacture their own food. Because autotrophs cap- ture energy and use it to make organic molecules, they are called producers. Recall that organic molecules are molecules that con- tain carbon. Most producers are photosynthetic, so they use solar energy to power the production of food. However, some autotrophic bacteria do not use sunlight as an energy source. These bacteria carry out chemosynthesis (KEE-moh-SIN-thuh-sis), in which they use energy stored in inorganic molecules to produce carbohydrates. In terres- trial ecosystems, plants are usually the major producers. In aquatic ecosystems, photosynthetic protists and bacteria are usu-

Good morning, class! Today we will talk about pets. Great! I love animals. Do you have a pet? Yes, I do. I have a pet dog. Does your dog have a tail? Yes, it does. It also has big ears. What are these? The first animal is a goat. The second animal is a rabbit. Are they good pets? Rabbits make good pets.They usually live in cages. Goats do not. They live on farms. What is this? It’s a lion. Do you like the lion? Yes! The lion is my favorite animal.

Miss Jill: Good morning, class! Today we will talk about pets. Student: Great! I love animals. Miss Jill: Do you have a pet? Student: Yes, I do. I have a pet dog. Miss Jill: Does your dog have a tail? Student: Yes, it does. It also has big ears. Miss Jill: What are these? Student: The first animal is a goat. The second animal is a rabbit. Miss Jill: Are they good pets? Student: Rabbits make good pets. They usually live in cages. Goats do not. They live on farms. Miss Jill: What's this? Student: It's a lion. Miss Jill: Do you like the lion? Student: Yes! The lion is my favorite animal.

Anna: What’s that, Cindy? Cindy: This is the Arctic. It’s at the top of the world. Anna: What animals live there? Cindy: The polar bear lives there. It is big and white. Cindy: The sea lion lives there too. It likes to swim and eat fish. Anna: I like fish too. Cindy: The Arctic fox lives there too. It is small and fast. Anna: Cool!

G8 PISA Assessment Slave's Dream Beside the ungathered rice he lay, His sickle in his hand. His breast was bare, his matted hair Was buried in the sand. Again, in the mist and shadow of sleep, He saw his Native Land. Wide through the landscape of his dreams The lordly Niger flowed; Beneath the palm-trees on the plain Once more a king he strode; And heard the tinkling caravans Descend the mountain-road. He saw once more his dark-eyed queen Among her children stand; They clasped his neck, they kissed his cheeks, They held him by the hand!-- A tear burst from the sleeper's lids And fell into the sand. And then at furious speed he rode Along the Niger's bank; His bridle-reins were golden chains, And, with a martial clank, At each leap he could feel his scabbard of steel Smiting his stallion's flank. Before him, like a blood-red flag, The bright flamingoes flew; From morn till night he followed their flight, O'er plains where the tamarind grew, Till he saw the roofs of Caffre huts, And the ocean rose to view. At night he heard the lion roar, And the hyena scream, And the river-horse, as he crushed the reeds Beside some hidden stream; And it passed, like a glorious roll of drums, Through the triumph of his dream. The forests, with their myriad tongues, Shouted of liberty; And the Blast of the Desert cried aloud, With a voice so wild and free, That he started in his sleep and smiled At their tempestuous glee. He did not feel the driver's whip, Nor the burning heat of day; For Death had illumined the Land of Sleep, And his lifeless body lay A worn-out fetter, that the soul Had broken and thrown away! analysis with multiple choice questions and answers

Write simple RCQ for beginners: Anna: What’s that, Cindy? Cindy: This is the Arctic. It’s at the top of the world. Anna: What animals live there? Cindy: The polar bear lives there. It is big and white. Cindy: The sea lion lives there too. It likes to swim and eat fish. Anna: I like fish too. Cindy: The Arctic fox lives there too. It is small and fast. Anna: Cool!

What are you painting, Emma? I am painting my favorite animal. Does your favorite animal have a tail? Yes, it has a tail. Does your favorite animal have big ears? Yes, it has big ears. Is it a lion? No, it’s a goat. Goats live on farms.

Ocean Animals Many kinds of animals live in the ocean. They are part of the ocean community. Let's meet some of these ocean animals. Most of the ones in this book are mammals, fish, or reptiles. I am a dolphin. I have a sleek body and a strong tail to swim fast. I live in a group called a pod, and I like to eat fish. I whistle to talk to other dolphins. I am a walrus, and I have ivory tusks. I use them to dig for clams and to protect myself. I live on ice and in cold water. My thick layer of fat keeps me warm. I am a hammerhead shark, and my head has a very funny shape. My eyes and nostrils are at the ends of lobes. I like to eat fish. I am a California sea lion. I am smart, noisy, and playful. I bark like a dog, and I am covered by short fur. I eat squid, octopus, and fish. I am an octopus. I have a soft body and no skeleton. I have eight arms with suckers. I shoot black ink from my body to hide and escape from danger. I can also change the color of my skin. I am a great white shark. I am a large and fierce shark. I have very sharp teeth that are shaped like triangles. I eat seals, dolphins, and fish. I am a manta ray. I have fins that look like wings. I am related to stingrays, but I do not sting. I am a sea horse, but I am not a horse. I am a fish. I change color to hide. Shrimp are my favorite food. Male sea horses, not females, carry eggs until they hatch. I am a leatherback turtle, the biggest turtle in the world. I lay eggs on land. Jellyfish are my favorite food. I am covered with leathery skin instead of a shell. I am a blue whale. I am the largest mammal ever to live. I make deep sounds that move through water. I eat tiny animals called krill. The ocean is home to all these animals. Many of them are endangered. They all suffer because of pollution and hunting. Keeping our oceans clean will help keep these animals alive.

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