Answer: the four terrestrial planets must once have been hot enough to be molten (like a liquid)
Explanation: Terrestrial planets can be defined as any planet of the solar system or any exoplanet which is "Earth-like" in the sense that it is composed primarily of metals and rock, in contrast to a planet which is a gas giant.
Within the Solar System, the terrestrial planets are the inner planets closest to the Sun, i.e. Mercury, Venus, Earth, and Mars.
Scientist believing that the densest, heaviest materials are at the center and not evenly distributed can be due to the fact that they must once have been hot enough to be molten. In this case, density will take place, making the heavier under and the lighter on top.
Answer:
Texas was not part of the Louisiana Purchase.
Explanation:
There were fifteen states that were part of this purchase, including: Louisiana, Missouri, Arkansas, Iowa, North Dakota, South Dakota, Nebraska, Oklahoma, and most of the land in Kansas, Colorado, Wyoming, Montana, and Minnesota.
Answer: A. The National Security Argument
Explanation: Bertrand is most concerned on the security of his country in all rounds. He is against relying on other continents for survival on a particular sphere.
has contributed in many ways such as in the production of:
- Many advances in metallurgy
<h3>How has Africa contributed to the world?</h3>
Africa which is the world's second-largest with the population of over 1.3 billion has contributed through her advances in metallurgy and tool making as well as bronze weapons and art .
There are many products such as copper and iron tools that is been export to the world from the continent of Africa.
learn more about Africa at brainly.com/question/25110079
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Variables are the term of concepts in a study, such as the average age of a person upon acquiring his or her first job and the average salary he or she was paid for that job.
Answer: Option A
<u>Explanation:
</u>
A variable is a feature, number or quantity that can be measured or counted. A variable can also be called a data element. Examples of variables are person's age, category of gender, company revenue and expenditures, birth country, capital expenditure, grade class, eye color and vehicle type.
Salary is some amount of money paid to the employee from an employer in a company. So, here in the given situation, the average person’s income come under the term variable (can be counted).
