A laborer or labourer — see variation in English spelling — is a person who works in one of the construction trades, traditionally considered most reliable manual labor<span>[clarification needed]</span>
Laborers are also employed outside of the construction industry, in
fields such as road paving, building construction, bridges tunnels etc.
laborers have all blasting, hand tools, power tools, air tools, and small heavy equipment, and act as assistants to other trades as well, when sometimes they need guidance,[1] e.g., operators or cement masons. The 1st century BC engineer Vitruvius
writes in detail about laborer practices at that time. In his
experience a good crew of laborers is just as valuable as any other
aspect of construction. Other than the addition of pneumatics,
laborer practices have changed little. With the advent of advanced
technology and its introduction into the construction field, the
laborers have been quick to include much of this technology as being
laborers work.
Answer:
Niche refers to the role of the microorganism or a living thing in an ecosystem. When two organisms occupying the same niche, the possible long-term consequence isA. local extinction. This is because the relationship is competition which can outlast the other. Eventually, when the environment is changed, the organisms adapt too which erases the original attributes.
Explanation:
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