The development of scientific explanations
Evolution
In 1859 An English naturalist (1809-1882). In 1859 Darwin published On the Origin of Species, which outlined his theory of evolution. published one of the most important books in all biology called 'On the Origin of Species'. It followed his round-the-World expedition during which he visited the Galapagos Islands. He first developed this A theory put forward by Charles Darwin that all living creatures that exist today, including human beings, have evolved over a period of millions of years from more primitive life forms. by The natural process whereby the best-adapted individuals survive longer, have more offspring and thereby spread their characteristics. Sometimes referred to as 'survival of the fittest'. in the late 1830s. He delayed publication for fear of the reaction from the Church.
Obtaining evidence for evolution is challenging. Scientists originally looked for small but gradual changes in organisms within the Preserved evidence of life that provides information about the history of life on Earth.. The case study of the obtained more evidence.
Scientists now use evidence that did not exist during Darwin's lifetime:
- development of antibiotic resistant bacteria like Methicillin-resistant Staphylococcus aureus, a strain of bacterium resistant to an important antibiotic.
- DNA analysis
New explanations are not usually accepted until more evidence is found.
Memory
Memory is a person's ability to store and retrieve information. It can be divided into your short-term and long-term memories. Short-term memory lasts for about 30 seconds. Long-term memory lasts an entire lifetime. Although revising for exams is difficult, there is no limit to the amount of information that can be stored in long-term memory. People who have sadly suffered brain damage, lose their long-term memory but can retain their short-term memory. This suggests that they work in different ways.
The multistore method for memory is a model to try to explain how our short-term and long-term memories interact. It is regarded as a good model but does not yet provide an exact explanation.