Chapter 34 Vertebrates Overview: Half a Billion Years of Backbones * Vertebrates are named for vertebrae‚ the series of bones that make up the vertebral column or backbone. * There are about 52‚000 species of vertebrates‚ far fewer than the 1 million insect species on Earth. * Plant-eating dinosaurs‚ at 40‚000 kg‚ were the heaviest animals to walk on land. * The biggest animal that ever existed is the blue whale‚ at 100‚000 kg. * Humans and our closest relatives are
Premium Mammal
Biology Q. 1. Biological organisation starts with: a. Atomic level b. Submicroscopic molecular level c. Cellular level d. Organismic level Sol. Correct choice: (2) Q. 2. About 98 percent of the mass of every living organism is composed of just six elements including carbon‚ hydrogen‚ nitrogen‚ oxygen and: a. calcium and phosphorous b. phosphorus and sulphur c. sulphur and magnesium d. magnesium and sodium Sol. Correct choice: (1) Q. 3. Which one of the following is an example of negative
Premium Cell DNA Vitamin
involves the beginning of mankind all the way to just a few years ago. Yesterday’s technology is like history. It began thousands of years ago and has been evolving over the years. Technology is said to have started with the invention of fire by the Homo erectus more than twenty two hundred thousand years ago. However‚ this
Premium Stone Age Paleolithic Upper Paleolithic
Part I Explain‚ with examples‚ how the process of natural selection and sexual selection are thought to have contributed to modern-day human behaviour. Lifestyle and behaviours of early humans would have been considerably different to that of modern day humans; however this is not an aspect that happened overnight but something that has taken thousands of years to develop. This aim of this essay therefore will be to explain‚ with examples‚ how human behaviour has evolved over time through the
Premium Natural selection Charles Darwin Evolution
THE HISTORY OF EARTH NATIONAL GEOGRAPHIC By: Juni Haryanto (B1034131008) Muhammad Ridwan (B1034131006) Erwinsyah (B1034131010) Background Earth is the third planet in the solar system‚ earth has been created since 4.54 billion years ago. Every planet in the solar system it is only earth that we know have living creature inside because the condition of earth is the most possible place for living creature can live inside in the planet. The first life creature live in earth is about 3.8 until 3
Premium Earth Sun
Ancient Astronaut Theory Language and Communication: Research LAT1 February 07‚ 2012 Ancient Astronaut Theory Research suggests that in ancient human history‚ extraterrestrials came to Earth‚ where they were hailed as deities and helped form human civilization. This idea is called the “Ancient Astronaut Theory” and can be supported by examining several areas of human history and practices. First‚ by examining religious texts and beliefs and the information
Premium Human
Out of Africa vs. Multiregional Paleoanthropologists have been searching for decades‚ looking for signs of early human life throughout Africa Asia and Europe‚ trying to find clues that tell them where the human race originated. These scientists have found overwhelming evidence of early human life across different continents‚ but are always working to attempt to explain what they have discovered‚ and try to piece together the earliest signs of human civilization. Two main theories have emerged
Premium Africa Colonialism Slavery
Review TRENDS in Cognitive Sciences Vol.9 No.5 May 2005 Evolution of the brain and intelligence Gerhard Roth1‚2 and Ursula Dicke2 1 2 Hanse Institute for Advanced Study‚ D-27753 Delmenhorst‚ Germany Brain Research Institute‚ University of Bremen‚ D-28334 Bremen‚ Germany Intelligence has evolved many times independently among vertebrates. Primates‚ elephants and cetaceans are assumed to be more intelligent than ‘lower’ mammals‚ the great apes and humans more than monkeys‚ and humans more than
Premium Cerebral cortex Brain Cerebrum
Internet and its Uses in Our Daily Life How difficult our life would have been if there was no Internet. Think about it. To find some information‚ we all have acquired the habit of ’Google’ it on the web; within a few seconds the screen displays the desired information. You want to book tickets for a movie night with friends‚ and you can book them at the click of a button. Many of us cannot imagine life without the social networking sites. The Internet has indeed made the world a small place and
Premium Internet World Wide Web Social network service
They created tools and technologies that helped them work with the world rather than working around the issues of the world. The tools allowed them to hunt‚ which gave them access to meat for food and the skin for clothing (Mahdavi). The homo erectus are the first to make a flaked stone axe‚ better known as the Acheulian hand axe. It was named because of the location it was found‚ in France. It was sharp‚ heavy and chipped on both sides into a point. It was able to be used for chopping‚ slicing
Premium Middle Ages