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The evolution of plant communities at a site over time- from pioneer species to climax vegetation. • At each stage of the succession the plant community. hope it will help you
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Metabolism means the ability to collect and use energy. ... Viruses are too small and simple to collect or use their own energy – they just steal it from the cells they infect. Viruses only need energy when they make copies of themselves, and they don't need any energy at all when they are outside of a cell.
Humans and animals need oxygen to survive so oxygen in the atmosphere maintains life on earth for humans and animals to breathe to survive
In molecular biology, DNA replication is the biological process of producing two identical replicas of DNA from one original DNA molecule. This process occurs in all living organisms and is the basis for biological inheritance. DNA is made up of a double helix of two complementary strands. During replication, these strands are separated. Each strand of the original DNA molecule then serves as a template for the production of its counterpart, a process referred to as semiconservative replication. Cellular proofreading and error-checking mechanisms ensure near perfect fidelity for DNA replication.[1][2]
In a cell, DNA replication begins at specific locations, or origins of replication, in the genome.[3] Unwinding of DNA at the origin and synthesis of new strands results in replication forks growing bi-directionally from the origin. A number of proteins are associated with the replication fork to help in the initiation and continuation of DNA synthesis. Most prominently, DNA polymerasesynthesizes the new strands by adding nucleotides that complement each (template) strand. DNA replication occurs during the S-stage of interphase.
DNA replication can also be performed in vitro (artificially, outside a cell). DNA polymerases isolated from cells and artificial DNA primers can be used to initiate DNA synthesis at known sequences in a template DNA molecule. The polymerase chain reaction (PCR), a common laboratory technique, cyclically applies such artificial synthesis to amplify a specific target DNA fragment from a pool of DNA.
Sara should replace the first old washing machine with a new one which has an efficiency of 10 gallons per load.
<h3>What is the meaning of eco-friendly?</h3>
An old washing machine uses = 35 gallons of water per load.
A new washing machine uses = 10 gallons of water per load.
Hence, the difference between the number of gallons used by the an old washing machine and a new washing machine's efficiency of using water is 15 gallons which will save more water.
Hence, sara should replace the first old washing machine with a new one which has an efficiency of 10 gallons per load.
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