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Neko [114]
3 years ago
8

What was the earliest known civilization?

Social Studies
2 answers:
nadezda [96]3 years ago
7 0

The answer is actually Sumer

Serga [27]3 years ago
3 0
It is usually accepted that Mesopotamia is the earliest knows civilization.

The Sumers were the first empire in the history, in Mesopotamia, but there was a civilization in Mesopotamia before them.


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Select the name of the experimental tactic described: This design is widely used in applied behavior analysis due to its ability
docker41 [41]

Answer:

ABAB design

Explanation:

This method used in the field of research on Behavior Modification consists of four phases:

1. Phase A: Stable patient.

2. Phase B: Introduction of treatment.

3. Second Phase A: Withdrawal of treatment before consolidation.

4. Second Phase B: Reintroduction of treatment

This allows to verify the reliability of the change produced by the treatment. If it produces a new behavior change, we would have more evidence that the cause of the change is treatment.

5 0
3 years ago
A) Technician A says that the pump check valve should hold system pressure for at least five minutes after the pump is shut off.
tiny-mole [99]

Answer:

Both technicians A and B are correct  

Explanation:

A pump check valve is device that allows the flow of any fluid in only one direction and prevents the flow from the reverse direction.

               When the pump operates, there is pressure that develops inside the pump. Now when the pump is shut down, the pump check valve is able to hold the pump pressure for sometimes until the pressure inside the pump becomes normal.

               When the pump check valve is defective, there is a drop in pressure inside the regulator or the pump. Because of the drop in pressure, it takes long time for the pump to start and hence longer cranking time.

Thus both technician A and technician B is correct.

Hence the answer is ---

Both technicians A and B are correct  

6 0
2 years ago
Jack wants to be better at saving his money. Name five or more tips you could suggest to help him save.
Alinara [238K]
<span>Set a budget and save early and save often! Try not spending too much money on invaluable objects.</span>
8 0
3 years ago
Read 2 more answers
What is the human normal life span
almond37 [142]

The normal human life span is about 79 years.

Hope this Helps!!

5 0
3 years ago
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Final treatment of wastewater in the united states normally involves treatment with _____ to make it safe
natta225 [31]

The final treatment of wastewater in the united states normally involves treatment with Chlorine to make it safe.

The final stage of the wastewater treatment process, which is when it is often carried out in most treatment plants, can also include chlorination. The primary goals of this chlorine addition are water disinfection and maintaining chlorine residuals that will stay in the water as it moves through the distribution system.

In the US, wastewater treatment facilities treat over 34 billion gallons of wastewater per day. Human waste, food waste, and some soaps and detergents all contribute nitrogen and phosphorus to wastewater. Once the water has been cleansed to the standards required and observed by state and federal authorities, it is often released into a nearby water body.

learn more about the treatment of wastewater here:

brainly.com/question/14375418

#SPJ4

6 0
2 years ago
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