The unit is called Ecosystem.
Ecological units comprise concepts such as population, community and ecosystem.
<em>An ecosystem</em> is a community of plans and animals interacting with each other in an particular area. They also interact with their non-living environments (water, earth, sun, soil, climate and atmosphere).
The robins are in relationship with the earthworms because the robins eat them in order to survive and as a part of the food chain. The food chain is a linear sequence of organism through which nutrients and energy pass as one organism eats another. Ecosystems consist of creatures that mutually benefit from each other.
On April 12, 1861, following diplomatic bickering over Lincoln's pledge to get supplies to Union troops at Fort Sumter, Confederate forces fired shots at the fort and Union troops surrendered, sparking the Civil War. In rapid succession, Virginia, North Carolina, Tennessee and Arkansas joined the Confederacy.
Conflict: American Civil War
Officeholder: Jefferson Davis
Explanation:
The expression of loyalty or support for a particular region of ones country rather than to the country as a whole
Externalities - An externality is such type of outcome which is not directly incureed by the producer but its consequences are incurred by society as a whole. The externalities can be negative as well as positive.
Negative externality- A externality that has a negative and harmful effect on society, as well as firms, are called negative externalities.
- For eg., A firm polluting the environment to save the cost of production will have negative consequences on society as a whole.
Positive externality - An outcome of the decisions and execution of a company that has led to positive consequences for both company and the society.
- For eg., the perfect example of positive externalities is the research and development work of any company. The research and development benefits not only the company to enhance its efficiency but it also benefits society by gaining the knowledge from the research, employment from work, etc,
To learn more about externalities please click on the link brainly.com/question/16968584
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Answer:
Declaration of Independence, Articles of Confederation, and Constitution
Explanation:
The colonists wanted to break away from Britain so they wrote the Declaration of Independence to express their anger. The Articles of Confederation was the first form of document that all the states ratified to create a government. The Constitution was the better form of government and was created after the Articles of Confederation failed. The Constitution was improved based on what worked and what didn't during the use of the Articles of Confederation.
