Because they are made to perform two different functions. Cells are part of tissues that are part of organs that perform a certain function. For example, your bone cells are made to make blood cells, so they wouldn’t be in your lungs as well.
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Anaerobic respiration does not need oxygen. It happens when there is not enough oxygen for aerobic respiration. ... 100m sprinters respire using anaerobic respiration in their race because their bodies do not take in enough oxygen during the race to carry out aerobic respiration.
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Sadness has sad feeling. for example, if a friend dies, you will cry. that is what sadness is.
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B. Speciation
Explanation;
-Speciation is how a new kind of plant or animal species is created. Speciation occurs when a group within a species separates from other members of its species and develops its own unique characteristics.
-The demands of a different environment or the characteristics of the members of the new group will differentiate the new species from their ancestors.
-An example of speciation is the Galápagos finch. Different species of these birds live on different islands in the Galápagos archipelago, located in the Pacific Ocean off South America. The finches are isolated from one another by the ocean.