They engaged in an 8-year war, in which iraq invaded iran september 22 1980. hope this helps, but its not a biology question its a history question :D
Implied powers are those that the "necessary and proper" language in Article I, Section 8 implies but which are not expressly defined in the constitution.
To enact all laws necessary and appropriate for carrying out the aforementioned powers, as well as all other powers granted to the United States government or any department or officer thereof by this constitution. The Necessary and Proper Clause1 closes up Article I's list of the enumerated powers of Congress by broadly stating that those powers also include the right to employ all appropriate measures to carry out those specified authorities. According to the Necessary and Proper Clause, all Implied and incidental powers that are helpful to the exercise of an enumerated power are included in the congressional power. The history of the Necessary and Proper Clause's insertion in the Constitution and its significance during the ratification discussions are first covered in this section. The section then moves on to early judicial interpretations of the Clause, culminating in Chief Justice John Marshall's famous McCulloch v. Maryland ruling from 1819. The section finishes with a discussion of contemporary Supreme Court opinions on the reach of Congress's jurisdiction under the Implied and Proper Clause, following a brief overview of the significant nineteenth-century Supreme Court decisions on the Clause after McCulloch.
Learn more about Implied and Constitution here:
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Well the bottom level for the feudal system were system or surfs, they were owned my the land so the did all the farming or ranching, and then the next class was merchant and they traded with other towns or cities, so yes the feudalism did allow for production and trade of goods
An independent variable is a variable that is controlled in the experiment to test whether there will be an effect on the dependent variable. So in the experiment, the independent variable is the color of the feeder because Jamal wants to know if there is an effect if he uses red feeders on the hummingbirds. This is the one being controlled by Jamal because he can use a variety of colors of the feeders.
Answer:
An observational study, not an experiment.
Explanation:
Researchers investigated reasons why different species of birds begin to sing at different times of the morning. They captured and examined birds of 57 species at different sites around England. They reported that there is a strong relationship between the diameter of a bird's eye and the time it starts singing in the morning: birds with larger eyes tend to start singing earlier.This is an example of An observational study, not an experiment.
