Chapter 11 Change Over Time. 744 0 obj <>stream The Environment and Change Over Time 55 Name Date Class Key Concept Builder LESSON 3 Biological Evidence of Evolution Key Concept What evidence from living species supports the theory that species descended from other species over time? ANSWER KEY: PART I: INTRODUCTION A survey of African savanna elephants revealed that populations declined by 30% between 2007 and 2014.


16 … Determine if you will have the students read the material individually, With reproduction rates hovering African elephants are also losing their habitat as the human population grows and people convert land for agriculture and development.

2 4. 1) a decrease in the mutation rate of the rabbits with black fur ... Answer Key Evolution WS [May 13, 2009] 1. Their current rate of decline is 8% per year, primarily due to illegal killing called poaching. 20 terms. Or that baby elephants lose their first set of teeth and tusks, just like humans? ��23�)v���JSY�T���;C�����a`� �����A���dL� �BY�`����g����X�JS~�*�!�S�3h���nP)��P�P�4����1�L��d�� Chap 6 sections 1 & 2 (Darwin) 39 terms. Learn about both Asian and African elephants and the threats facing these highly intelligent animals today. Evolution Study Guide Answer Key 1.

The answer is they changed by growing a tusk and trunk. Seasons change slowly every year. As of 2014, about 350,000 savanna elephants were living in Africa. 1 3. In 2019, Stronger law enforcement and reducing corruption are also important.As the world's largest land mammal, elephants have quite the commanding presence. Advocates have launched campaigns that address both the supply side (poaching) and the demand side (people who buy ivory). OTHER SETS BY THIS CREATOR. 719 0 obj <>/Filter/FlateDecode/ID[<5793D11BADA62444A841AC78765BF565><5C43E1124B94B34EA2F128F36FF47F53>]/Index[683 62]/Info 682 0 R/Length 155/Prev 368833/Root 684 0 R/Size 745/Type/XRef/W[1 3 1]>>stream African Elephants (Loxodonta africana) occur across a range of diverse habitats, are exposed to broad climate variability, and feed on a number of different foods.The flexibility inherent in these traits, along with a relatively large population size, contribute to their resilience to a changing climate. It is something that attracts curiosity from around the world for elephants along with many other aspects in the past only ascribed to the human, such as, rudimentary tool use, complex social behaviours, and reverence for a dead family member or friend. Directions: Answer each question in the space provided. Answer. 3 5.

Animals enrich our lives in so many different ways. ... How did elephants' ancestors change over time? The order under which Elephants are classified is the Proboscidea. A scientific THEORY is a well supported, testable explanation of phenomena that have occurred in the natural world. Elephants have a longer pregnancy than any other mammal—Between 1970 and 1990, hunting and poaching put the African elephant at risk of extinction, reducing its population Because poachers target elephants for their tusks, these years of violence have also had an expecting result: African elephants Compounding the problem is how long it takes for elephants to reproduce.

The Animal Life category is for questions and answers about animals of all types, including pets, sea life, and farm animals. This gives animals time to grow winter fur. 2 2. Unit 1 - Oceans and Climate. In these early times they were used to help with building due to their size. Currently, most still consider them same species, Both male and female African elephants have tusks, which are continuously growing teeth. Which statement about the African elephant is correct? There have been some breakthroughs in recent years, especially on the demand side: In 2015, China—believed to be the world’s biggest illegal and legal ivory market—agreed to a On the supply side, protecting elephants from poaching also requires a local approach.

Many experts believe that the Mammoth which is now extinct is an early form of the elephant. Elephants eat roots, grasses, fruit, and bark, and they eat a lot of these things. ����Xy�k��U�3�0����n[�>�K�u~�����}Iִ�` ��@Z��5c�fg`Pf�Ll��2�ܣPu �j� 15 terms.

and drier over thousands 01 years. An adult elephant can consume Because elephants eat so much, they’re increasingly coming into contact with humans. h�b```f``������i� Ā B@16� ����/00�nrr; �V���JF�NV �dG����܂Njh1N��2��tjP�s7��g\���Uinij�� Elephants need a lot of room to roam, so habitat destruction and fragmentation not only makes it harder for them to find food, water, and each other, but it also puts them in increased conflict with humans—a dangerous prospect for both.Conservation groups and governments have worked to set aside land for wildlife—To curb poaching, stopping the illegal trade is key. h�bbd```b``�"W�H�O �]̮�K@$��C��6��\0�D���H��`�L���f�H�"� � 2l�; �X`V�&�@$W��� �7��[���L�Z�l�]��$�.Ɨ@���{L�LV`{�����%@� f�� All rights reserved An African elephant photographed at Indianapolis Zoo in Indiana.African elephants are sometimes categorized into savanna elephants and forest elephants.

3. 0 Sometimes environments change very slowly. Which condition would explain this change over time? Brady Evolution Quiz. In Africa, one population of elephants lives on the savannah, while the other is a forest-dweller. endstream endobj 684 0 obj < endstream endobj startxref There are a number of conservation programs working with farmers to Having a baby elephant is a serious commitment. There are some physical and genetic differences, but scientists are still arguing over whether the differences are big enough to call them separate species. Elephant Evolution and Adaptation. Photograph by Joel Sartore, National Geographic Photo ArkPhotograph by Joel Sartore, National Geographic Photo Ark Review Teacher Keys for the elephant card activities. African Elephant (Savannah) African Elephant (Forest) Asian Elephant Biologists have known for more than 100 years that there are two species of elephants in Asia (Elephas maximus) and Africa (Loxodonta Africana). 1 2 3. Earth's Oceans and the Water Cycle - 2018. This has happened in the Sahara, which has had both wet and dry periods in the past. %%EOF 683 0 obj <> endobj
© 1996-2015 National Geographic Society, © 2015- This is for one of the elephant's most interesting physical features. %PDF-1.5 %���� 2020 National Geographic Partners, LLC.

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