Genetic variation<span> occurs </span>mainly<span> through DNA mutation, gene flow (movement of genes from one population to another) and sexual reproduction</span>
Answer:
They remain in an environment,even as more competitive species arrive
Explanation:
Pioneer species, in ecological succession, are the first set of organisms to colonize a bare area of land or a disturbed area of land. Pioneer species include lichens, grasses, fungi etc.
Pioneer species have unique characteristics that distinguishes them from every other species of organism. These include:
- They facilitate environmental change, making an environment more habitable for other species.
- They tolerate a wide range of environmental conditions.
- They are capable of colonizing a barren environment, as in primary succession.
However, pioneer species do not remain in an environment, even as more competitive species arrive. They rather give way for new species to emerge and dominate.
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Extensor Digitorum:
The extensor digitorum is the main extensor of the fingers. Attachments: Originates from the humerus, splitting into four tendons at the wrist which travel through the carpal tunnel and attach to the digits. Actions: Extends fingers.
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Enzymes are the things in our bodies that facilitates reactions. They break down bonds in carbohydrates, lipids and proteins. When the food is being broken down, it is easier for the body to use. When the body is conducting cellular respiration, it uses monosaccharides (singular carbohydrate), to form ATP which is useable energy for the body. The body uses ATP everywhere for all bodily functions, which maintains homeostasis. <span />
