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What is agricultural extention
gricultural extension was once known as the application of scientific research and new knowledge to agricultural practices through farmer education. .
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User: What is agricultural extention





Weegy: gricultural extension was once known as the application of scientific research and new knowledge to agricultural practices through farmer education. .
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Asked 5/14/2011 8:29:20 AM
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What is biology
Weegy: Evolution by Natural Selection developed by Charles Darwin. His theory has two parts. Natural selection. This means that a species or distinct form of life changes or evolves over many generations. Then the mechanisms for this species change. [ This is called natural selection. Inheritance or the theory of biological evolution was developed by Gregor Mendel. The principles of inheritance proposed from his experiments with common pea ... (More)
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Updated 5/14/2011 10:49:13 AM
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Biology is : 1. The study of living organisms, divided into many specialized fields.

2. The plants and animals of a particular area.
- the biology of Chesapeake Bay, for example

3. The physiology, behavior, and other qualities of a particular organism or class of organisms.
- human biology
Added 5/14/2011 9:53:56 AM
Biology is the study of life. Alongside physics and chemistry, biology is one of the largest and most important branches of science. At the highest level, biology is broken down based on the type of organism being studied: zoology, the study of animals; botany, of plants; and microbiology, of microorganisms. Each field has contributed to mankind or the Earth’s well-being in numerous ways. Most prominently: botany, to agriculture; zoology, to livestock and protection of ecologies; and microbiology, to the study of disease and ecosystems in general.

Besides classifications based on the category of organism being studied, biology contains many other specialized sub-disciplines, which may focus on just one category of organism or address organisms from different categories. This includes biochemistry, the interface between biology and chemistry; molecular biology, which looks at life on the molecular level; cellular biology, which studies different types of cells and how they work; physiology, which looks at organisms at the level of tissue and organs; ecology, which studies the interactions between organisms themselves; ethology, which studies the behavior of animals, especially complex animals; and genetics, overlapping with molecular biology, which studies the code of life, DNA.

The foundations of modern biology include four components: cell theory; that life is made of fundamental units called cells; evolution, that life is not deliberately designed by rather evolves incrementally through random mutations and natural selection; gene theory, that tiny molecular sequences of DNA dictate the entire structure of an organism and are passed from parents to offspring; and homeostasis, that each organism’s body includes a complex suite of processes designed to preserve its biochemistry from the entropic effects of the external environment.

The basic picture in biology has stayed roughly the same since DNA was first imaged using x-ray crystallography in the 1950s, although there are constant refinements to the details, and life is so complex that it could be centuries or even millennia before we begin to understand it in its entirety. But it should be made clear that we are moving towards complete understanding: life, while complex, consists of a finite amount of complexity that only appreciably increases on relatively long timescales of hundreds of thousands or millions of years. Evolution, while creative, operates slowly.

In recent years, much excitement in biology has centered on the sequencing of genomes and their comparison, called genomics, and the creation of life with custom-written DNA programming, called synthetic biology. These fields are sure to continue grabbing the headlines in the near future.
Added 5/14/2011 10:49:13 AM
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