Biology Essays Examples For College & High School Students in PDF

10822 total results

An Analysis of Galileo’s Work in the Starry Messenger (878 words, 2 pages)

I cannot recall its origin but there is an old adage that says ones way of thinking and speculating depends on hisher perspective. There is no need argue about its validity for I am sure everyone would agree from their own experience. With the adage said above, I would like ... Read More

An Analysis of the Topic of the Moon (418 words, 1 pages)

The Moon is the only natural satellite of Earth orbit 384,400 km from Earth diameter 3476 km mass 7.35e22 kg Called Luna by the Romans, Selene and Artemis by the Greeks, and many other names in other mythologies. The Moon, of course, has been known since prehistoric times. It is ... Read More

Uncovering the Mysteries of the Universe (1284 words, 3 pages)

It is always a mystery about how the universe began, whether if and when it will end. Astronomers construct hypotheses called cosmological models that try to find the answer. There are two types of models Big Bang and Steady State. However, through many observational evidences, the Big Bang theory can ... Read More

Stephen Hawking Tries to Discover the Secrets of the Universe (1664 words, 2 pages)

The history of the universe is one of the most perplexing subjects of all time. For years, people have looked up to the stars and wondered where does it end? Where do we come from? What of time travel? We have always watched science fiction movies on these subjects and ... Read More

Fun Facts About the Earth’s Moon (419 words, 1 pages)

The Moon is the only natural satellite of Earth orbit 384,400 km from Earth diameter 3476 km mass 7.35e22 kg Called Luna by the Romans, Selene and Artemis by the Greeks, and many other names in other mythologies. The Moon, of course, has been known since prehistoric times. It is ... Read More

An Analysis of the Geography of Mars, the Fourth Planet in the Solar System (487 words, 1 pages)

The planet Mars is nicknamed the god of war. The Planet probably got its name from its red color, Mars is sometimes called the red planet. Mars orbit is significant because it is elliptical. Mars average temperature is about -55C and at the winter poles it is almost about 27 ... Read More

A Report on the Hubble Space Telescope Project (1174 words, 3 pages)

The forty-three and a half foot long, twelve ton, one and a half billion dollar Hubble Space Telescope was launched into orbit on April 24,1990 (Macchetto, p. 125). The Hubble Space Telescope or HST has been the best way to look far into the universe ever since then. Ground-based telescopes ... Read More

An Essay on Jan Oort and Fritz Zwicky: The Dark Matter (809 words, 2 pages)

Two people have been credited for determining the need for dark matter. The first was astronomer Jan Oort, who back in 1932 measured the perpendicular motions of nearby stars relative to the disk of our galaxy. By studying the gravitational influence of the disk on these stars he was able ... Read More

A Study on Black Holes in the Galaxy (3000 words, 4 pages)

Every day we look out upon the night sky, wondering and dreaming of what lies beyond our planet. The universe that we live in is so diverse and unique, and it interests us to learn about all the variance that lies beyond our grasp. Within this marvel of wonders, our ... Read More

The Theory of the Existence of Black Holes in the Galaxy (1527 words, 2 pages)

Within our universe there are millions upon millions of galaxies. Humans have known the existence of stars since they have had eyes. The mystery does not lie within what we can see, but what we cannot see. The theory that black holes have existed is not new at all. All ... Read More

A Research on Two Cosmological Models: The Big Bang Theory and Steady State Model (1231 words, 3 pages)

The mystery of the beginning of our universe has puzzled mankind since the dawn of time. This mystery is especially relevant to astronomers, who construct hypotheses called cosmological models to try to find the answer to this ancient question. This paper will focus on two of these models The Big ... Read More

A Report on the Big Bang Theory (1437 words, 2 pages)

My report is about the Big Bang Theory. It contains three major points, which are the origin, how this theory was formed and my thoughts about the theory. First, I will start with how the Big Bang Theory came about.No one really knows how the solar system was formed. The ... Read More

A Research on the Marvelous Norther Lights and the Findings of Kristian Birkeland (1035 words, 2 pages)

The Northern Lights and Kristian BirkelandThe northern lights have inspired awe and reverence in people all throughout the northern latitudes. At their most impressive, they form an immense halo of pulsating light around the pole, stretching hundreds of kilometers out into space. People in the 18th century were unsure what ... Read More

A Comparison of Astronomy and Astrology (563 words, 2 pages)

One similarity that exists between astrology and astronomy is the way in which they originated. Astronomy originated in the ancient world when people began to notice that heavenly bodies moved in a specific, consistent motion. The more people understood about the movement of the heavenly bodies, the easier it was ... Read More

Attempting to Explain When the Evolution of Humanity All Started (718 words, 2 pages)

When did the evolution of humanity all start? Were apes our ancestors? In the past early man used to communication through telling stories, painting and drawing on cave walls, using simplified symbols. The human mind developed its capability as its needs for comfort grew. Our achievement has been remarkable. The ... Read More

A History of the Human Evolution (1494 words, 3 pages)

Human evolution, the biological and cultural development of the species Homo Sapiens, or human beings. A large number of fossil bones and teeth have been found at various places throughout Africa, Europe, and Asia. It gives idea of human evolution during past 4 million to 5 million years. From a ... Read More

The Question of Whether Genetic Engineering Is a Leap in to the Future or Towards Destruction (1896 words, 3 pages)

Genetic Engineering A leap in to the future or a leap towards destruction? Introduction Science is a creature that continues to evolve at a much higher rate than the beings that gave it birth. The transformation time from tree-shrew, to ape, to human far exceeds the time from an analytical ... Read More

The Early Life and Times of Galileo Galilei (867 words, 2 pages)

Galileo Galilei was born at Pisa on the 18th of February in 1564. His father, Vincenzo Galilei, belonged to a noble family and had gained some distinction as a musician and a mathematician. At an early age, Galileo manifested his ability to learn both mathematical and mechanical types of things, ... Read More

An Overview of Homo Neanderthalensis or Nearnderthals (854 words, 2 pages)

Homo neanderthalensis, also known as Neanderthals, are one of the best-known archaic human populations. They lived 250,000 to 30,000 years ago in Europe and Eastern Asia around the time of the fourth glaciation. There were many adaptations in the Neanderthal culture. They created a variation in their tools from previous ... Read More

A Comparison of Chimps and Humans (482 words, 1 pages)

Chimps Vs. HumansIn HG and Chimps they have similar structures in their living styles. The total population size for HG is 100- 1000 in a tribe while C have a large group of 40-80 in their primate group. These groups break down into smaller bands or feeding groups. The HG ... Read More

The Background of the Walking Stick Insect (343 words, 1 pages)

There are nearly 3 000 species of walking sticks in the world all of which feed exclusively on vegetation. Walking Sticks are insects and belong to the Orthoptera order. This order includes grasshoppers, crickets, praying mantises, and cockroaches. Walking sticks are suborder phasmatodea, family phasmatidea .Many walking sticks are parthenogenetic ... Read More

An Analysis of the Scientific Classification of Order and Genus (1978 words, 3 pages)

Scientific Classification Order Genus. The scientific order of all types of whales is Cetacea. This large order is broken down into three further groups as well the toothed whales or Odontoceti, which includes killer whales, dolphins, porpoises, beluga whales, and sperm whales, the baleen whales or Mysticeti, which include blue ... Read More

An Analysis of the Genetic Traits of Imprinting (725 words, 2 pages)

An Australian zoologist, Konrad Lorenz coined the phrase imprinting. Imprinting describes a phenomenon in which an earlier experience determines later social behavior. Other investigators observed similar effects before Lorenz, but he was the first to name it and to point out that it appeared to occur at a critical period ... Read More

A Look at the Gray Wolf a.k.a. Canis Lupus (457 words, 1 pages)

The most commonly used name is the Gray Wolf, while the more scientific name is the Canis Lupus. The wolves are known to extremely smart and adaptive. The Native Americans tried to learn from the way the wolves lived and adapted off the land and its resources. Wolves are right ... Read More

The Evolution of Mammals from the Oceans (570 words, 1 pages)

In the beginning, all life evolved from the oceans. It started very small, then evolved to produce creatures, which were larger than life. First, there were plants and insects. Next which evolved were reptiles and fish. From those reptiles and fish came the amphibians. The amphibians were the predecessors to ... Read More

The Advantages and Disadvantages of Genetic Manipulation (1256 words, 2 pages)

Althea is a 13-year-old girl who lives in a little isolated society far away from the problems of the big cities. She is a member of an exclusive gathering of people, who have fled from the dictatorship that rules the cities with an iron hand. When Althea one bright morning ... Read More

Characteristics of Keloid Scars (Scar Tissues Forming in or Around a Piercing) (730 words, 1 pages)

Keloid scars are raised blister- or pimple-like formations of scar tissue which form in or around a piercing. Keloids may be red, itchy, and inflamed, or they may appear as if some skin from inside the piercing has been pulled out. Keloids seem to occur most frequently in navel piercings, ... Read More

The Role of Photosynthesis and Respiration (497 words, 2 pages)

A seed certainly looks dead. It does not seem to move, to grow, nor do anything. In fact, even with biochemical tests for the metabolic processes we associate with life (respiration, etc.) the rate of these processes is so slow that it would be difficult to determine whether there really ... Read More

An Analysis of the Topic of the Transportation of the Medium Food (626 words, 3 pages)

Functions1. Transportation medium for food and oxygen cells.2. Transport medium for waste and carbon dioxide from the cells.3. Movement of hormones, enzymes, immune cells and other chemicals throughout the body.4. Important in the regulation of body temp.BLOOD Plasma Solutes Proteins Albumins-Originate in hemocytoblasts, found in marrow and lymphatic system-Increase in ... Read More

An Overview of the Structure of an Atom (343 words, 1 pages)

The atom consists of a central, positively charged core, the nucleus , and negatively charged particles called electrons that are found in orbits around the nucleus.The Nucleus Almost the entire mass of the atom is concentrated in the nucleus, which occupies only a tiny fraction of the atom's volume. The ... Read More

Biology Essay Examples