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Sever21 [200]
3 years ago
6

According to scientists, how did early people migrate out of Africa and into new places? a. They used the wheel. c. They used sh

ips. b. They used land bridges. d. They used technology. Please select the best answer from the choices provided A B C D
Social Studies
2 answers:
garik1379 [7]3 years ago
7 0

The correct answer is B. They used land bridges

Explanation:

Most theories related to human development and expansion towards all continents claim humans first emerge in Africa and then migrate to different parts of the world including Europe, Asia, and America. Moreover, as it is estimated this occurred more than 20,000 years ago when there were no technologies such as automobiles, ships or airplanes, it is believed humans used land bridges, which are natural bridges between continents or different zones, to migrate from Africa to other continents. For example, the Bering land bridge that connected Asia and America was used for human groups to get to America. Thus, early people migrate out of Africa using land bridges.

WINSTONCH [101]3 years ago
4 0

the answer is  b. They used land bridges.

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Alex and his family moved into an apartment on the 98th floor of a building. The first few times that Alex used the elevator, hi
lakkis [162]

Answer:

His ears popping      

Explanation:

Conditioned response: In psychology, the term "conditioned response" is described as one of the different parts in the "classical conditioning theory" and is also written as "CR". The theory of classical conditioning was determined by a psychologist named Ivan Pavlov while he was conducting a small experiment in his laboratory on dogs.

A conditioned response is referred to as an organism's behavior that doesn't come out naturally yet it can be leaned by the organisms via the pairing of a "neutral stimulus" with a "potent stimulus" or "unconditioned stimulus".

In the question above, the given statement signifies conditioned response as "his ear-popping".

3 0
3 years ago
The use of metaphor and analogy is an indication of which stage in piaget’s theory of cognitive development?.
arlik [135]

In Piaget's theory of cognitive development, the use of metaphor and analogy is a sign of its formal operationality.

<h3><u>Describe formal operational.</u></h3>

Piaget's theory has four stages, the formal operational stage being the final and the fourth. Though Piaget does note that some people may never reach this stage of cognitive development, it starts around the age of 11 to 12 and lasts until adulthood.

The capacity to develop hypotheses and conduct systematic tests on them in order to find a solution to a problem characterizes the formal operational stage. In addition to being able to think abstractly, someone in the formal stage can comprehend the shape or structure of a mathematical problem.

Learn more about formal operations with the help of the given link:

brainly.com/question/20916293

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9 months ago
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8 0
3 years ago
A group of investigators are investigating a recent airplane crash in Lucitona. The investigators discovered debris of the aircr
tino4ka555 [31]

Answer:

Hence the information at disposal was incomplete.

Explanation:

The absence of a flight data recorder led the investigators to call off the investigation. It is often concluded that the investigation was called off because:- the information at disposal was incomplete. The flight data recorder is a crucial instrument that receives information from the sensors located in several parts of the plane and provides essential information associated with aircraft accidents.

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3 years ago
What exists when there are a set of circumstances that would cause a reasonably intelligent and prudent person to believe that a
Crazy boy [7]

Answer:

Probable cause

Explanation:

Probable cause is created to enable the polices to react in emergency situation

In most cases, a police has no right to conduct an investigation into a private property without a warrant.

But, If the police has a strong reason to believe that a crime has been committed (such as hearing a gun shot or screams for help) , the police has the right to conduct the investigation without the warrant under the protection of probable cause.

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2 years ago
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