Answer:
An urban area is the region surrounding a city. Most inhabitants of urban areas have nonagricultural jobs. Urban areas are very developed, meaning there is a density of human structures such as houses, commercial buildings, roads, bridges, and railways. "Urban area" can refer to towns, cities, and suburbs.
Explanation:
Answer:Irregular
Explanation:hope this helps
In order to understand how researchers study personality psychology, it is important to start by ... the most popular and widely accepted trait theory of personality today.Most of the studies were from 1980 compiled an extensive early review of test bias studies. .... Important variables to consider include exposure to ... found to influence some personality tests include beliefs ... examine factors that may have impacted DIF values on ...
Answer:
The unknown radioactive element is present in pitchblende.
Explanation:
Marie Curie was the scientists that mainly worked on the radioactive element. She was the first scientist who won the noble prize in two different fields of science.
The pitchblende was the mineral sample that was noticed by Marie curie during her experiment. Pitchblende contains a more radioactive element that uranium and confirms that she had found a new element.The new element was polonium with hundred times more radioactive than uranium.
Thus, the answer is unknown radioactive element is present in pitchblende.
