This tree was only able to grow in warm climates and had a seed that could not float, yet fossils of this tree are found in different hemispheres of the world today. The two types of islands are continental islands and oceanic islands. Since sSimilar species are found on many different islands, this which supports the claim that at one time, every piece of land was connected. The evidence of the continental drift is abundant. Plate tectonics are the main evidence to support er of the notion of continental drift, as well as the shapes of the continents.
Summary of “Why Evolution is true” By: Jerry A. Coyne What is evolution; chapter I explains Darwin’s theory of evolution, which applies to all species, new species are descended from earlier forms. This means that organisms with similar characteristics are likely to have shared a common ancestor sometime in the past. The more traits shared by organisms, the closer their evolutionary relationship. This principle of “common descent” explains why anthropologists are interested in studying nonhuman animals, particularly primates (the mammalian order that includes monkeys, apes, and humans), with whom humans share the closest common ancestor. Some of our important human characteristics, such as a spinal cord encased in a bony vertebral column, and the concentration of nerve cells in a brain, are part of our vertebrate heritage, established in a common ancestor over 600 million years ago.
Because of the plates, the Earth’s crust is in continuous motion, but without plate tectonics to dissipate the heat in the core, Venus undergoes a different process where the mantle will heat up to the point where the crust is weakened. The planet then goes through a period of subduction over approximately 100 million years where the entire surface is recycled. This means that the surface of Venus is much older than Earth’s surface, and this in turn supports a much higher number of volcanoes, which have shaped much of the surface. Venus also has considerably less erosion from wind compared with earth so many of the volcanoes are in great condition. There is compelling evidence for past and present water on Mars.
This began over thousands of years ago with the Romans and Greeks. One of their hypotheses was that life was started by spontaneous generation. However thousands of years later Charles Darwin arrived with a different view. See Darwin thought that life evolved by natural selection. Eons ago life probably within a warm watery environment and then evolved into what it is today.
Tide is the alternate rising and falling of the sea, usually twice in each lunar day at a particular place, due to the attraction of the moon... The sun provides light for photosynthesis, but also provides heat giving a suitable temperature for organisms to thrive in. The temperature of a freshwater environment can directly affect the environment as a whole and the organisms that occupy it. Other factors: water, pH, salinity, substratum, nutrient supply, dissolved gases, pressure, currents, waves, exposure to air, etc. The native plants Kelp is important because it provides shelter and food for a lot of sea creatures.
These dimensions encompass a relationship with all living and non-living things on this earth. In short, I believe it is safe to say that sustainability has a very wide definition and it encompasses many areas of our world and our lives. In this paper, I will be touching on the topics that relate to sustainable communities. Earth is approximately 4.6 billion years old and it is believed that humans originated about 200,000 years ago in the Middle Paleolithic period in southern Africa. Approximately 70,000 years ago, humans migrated out of Africa and began colonizing our planet.
For the most part primates are classified quadrupedal. Primates travel in methods of brachiation, vertical clinging and leaping, knuckle walking, and bipedalism for modern man. Through natural selection and evolution primates developed an increase of hair density changes in body configuration and have shifted to having a gradual upright stance. Grade I-Lemurs The first grade of primates came in the Paleocene epoch, about 65 million years ago. It is the most primitive, and it includes true lemurs, galagos and lorises.
Geo 202 Ichthyosaurs Ichthyosaurs, the Greek word for fish lizard, were a marine animal far from what its name implies. They played the role of what whales, seals, and dolphins play in today’s marine ecosystem. From fossil records, geologists can tell a lot about the life ichthyosaurs lived throughout the years it roamed the seas, including their body structure, how they reproduced, what they ate, where they lived, and much more including their extinction. Based on fossil evidence, the ichthyosaur first appeared around 245 million years ago. Although earlier forms had a sleek, lizard like body, most had a body structure that most resembled modern day mammals (Perkins).
3. Perform independent research to answer the following questions: Cite resources used o A. What was the size or tons of the object that impacted Earth during the late Mesozoic – often given credit for causing the dinosaur extinction? Discuss where the impact occurred, what size crater was produced, how fast it was traveling, and how did this event impact the Earth? o B.
protists and fungi, have their food delivered to them, thus conserving energy by not having to go far to feed. These protists also exhibit ectosymbionts; symbionts occurring on the outside of their bodies. These interconnected mutual beneficial relationships between the termites and their symbionts are cause for a most perfect example of mutual symbiosis in the animal kingdom. Termites Termites are colonial insects that belong to the taxonomic family Termitidae of the order Blattodea. This insect has a fossil record dating back as far as the Cretaceous period, 140 million years ago and have developed into approximately 2600 different species around the globe, most species inhabiting tropical rain forests and the savannas; fewer inhabiting more temperate climates.