Activity theory is a framework or a descriptive tool for a system. Consider the entire activity/work beyond just one actor or user. Accounts for environment, history of a person, culture, role of the artifact, complexity of real life action etc...
Answer:
True
Explanation:
The practitioner must separately date and time his or her signature authenticating an entry, even though there may be a date and time already on the document, because the latter may not reflect when the entry was authenticated:True
Islands form an arc when two oceanic plates converge (come together, approach) creating a row of islands above the overriding plate. The older, heaver plate gets forced below the lighter plate. That old plate heats up and descends into the lithosphere. The edge of that plate begins to melt as it gets deeper into the earth. The melting plate feeds magma chambers that supply volcanic islands that forms an arc <span>when the molten rock erupts onto the ocean floor of the overriding plate.</span>
Sustainability in an environmental context implies that humans don't have a negative impact on the world. So any way that reduces human impact, such as recycling, is definitely a way to promote sustainability. The alternative to recycling is simply to throw it into the trash or litter, it's obvious which practice is preferable when regarding sustainability.
