The Cambrian explosion was a period at the Pre-Cambrian boundary of the geologic time scale at 542 Ma. At this boundary, the fossil record shows that animals suddenly appeared in a dramatic radiation of life. A radiation is the relatively rapid development of new types of organisms that derive from a common ancestor. The Cambrian explosion is important because it marks the origination of all major animal groups called phyla.
Natural selection occurs in a population of organisms of the same species when the individuals are C. are genetically different and exhibit different characteristics.
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What is the Natural selection?</h3>
Natural selection most effective acts at the populace's heritable trends: choosing for useful alleles and, thus, growing their frequency withinside the populace, at the same time as choosing in opposition to deleterious alleles and, thereby, reducing their frequency. This procedure is referred to as adaptive evolution.
- Natural selection can most effective arise if there may be variant amongst contributors of the equal species.
- Natural selection is the procedure thru which populations of living organisms adapt and change. Individuals in a populace are certainly variable, that means that they're all exclusive in a few ways. This variant manner that a few people have trends higher perfect to the surroundings than others.
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Both photosynthesis and respiration require specific catalyst.
Why not the other answer?
(1) only photosynthesis require the sun as a source of energy,respiration use glucose.
(2) photosynthesis result in the formation of glucose,respiration result in the formation of carbon dioxide.
(3)Only respiration occur in the mitochondria,photosynthesis occur in the stroma of the chloroplast.
Answer is 2 because both of them require specific enzyme and as you know enzymes are biological catalyst.
Fermentation is a type of chemical process which enables heterotrophs to obtain energy without oxygen . Heterotrophs uses procedure of fermentatation to cultivate because in process of fermentation enzymes are the catalysts and they provide energy to heterotrophs
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There is overwhelming evidence that human activities, especially burning fossil fuels, are leading to increased levels of carbon dioxide and other greenhouse gases in the atmosphere, which in turn amplify the natural greenhouse effect, causing the temperature of the Earth's atmosphere, ocean, and land surface to
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