Answer: St.Louis gateway Arch
Explanation:
This monument is the tallest in the United States. It reaches 630 feet tall and is completely man made.
Answer:
The explanatory variable in the Yale study is <u>which medication a subject was given.</u>
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Explanation:
The response variable in a study is the focus of the question of that study. In this particular case, what the study aims to know is whether a subject was able to stay off cocaine. The explanatory variable is the one that may or may not influence the response variable. In this case, what might influence the subjects is the medication given to him/her.
Answer: Radioactively-labeled materials
Explanation: nuclear medicine is a medical specialty that uses radioactive tracers to diagnose and treat different diseases. Radioactive tracers are materials that can vary according to the purpose of the method. For most diagnostic, the radioactive tracer is administered by intravenous injection. However it may also be administered by inhalation, by oral ingestion, or by direct injection into an organ.
SPECT scans are primarily used to diagnose and track the progression of heart disease, and the major purpose of PET scans is to detect cancer and monitor its progression, response to treatment, and to detect metastases. This two methods are the most used in nuclear medicine.
Answer:
poor colonists moved inland to find good farmland.
Explanation:
Answer:
The answer is written communication.
Explanation:
Written communication can be both formal and informal; in this case, the tone is clearly formal.
One important feature of written communication is that it's usually taken as the final word, which means it can't be taken back es easily; however, the rise of instant messaging has led to a more natural and intimate use of written communication. That's why professional and academic related messages are typically sent via e-mail.
