The answer to this question is:
A. Barley and wheat were both civilizations' main crops
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Answer:
The Bulk density = 1.3 g/cm³
the porosity of the sample is 132 cm³
Explanation:
Given:
Volume of cylinder = 260 cm³
Mass of container and the soil = 403 g
Mass of the empty container = 65 g
Thus,
The mass of the soil is = 403 - 65 = 338 g
Now,
The Bulk density = 
or
The Bulk density = 
or
The Bulk density = 1.3 g/cm³
also,
average particle density for mineral soil is usually given as 2.65 g/cm³
i.e the air present in the given soil sample has reduced its density from 2.65 g/cm³ to 1.3 g/cm³
The mass of the whole sample = Volume × Density
= 260 × 2.65
= 689 gm
but,
The actual mass of the dry sample = 338 g
thus,
Mass of air in the sample = 689 - 338 = 351 g
Therefore,
the volume of 351 g soil = 
= 
= 132.45 cm³
so the porosity of the sample is 132 cm³
Two artifacts found in the same stratigraphic layer are assumed to be of similar age due to the Law of Association.
The principal laws of the association are contiguity, repetition, attention, pleasure-pain, and similarity. The fundamental legal guidelines were formulated with the aid of Aristotle in about 300 B.C. and by way of John Locke in the 17th century.
Aristotle counted 4 laws of association when he examined the techniques of remembrance and recall: The law of contiguity things or events that occur near each other in space or time tend to get related collectively in the thoughts. Laws of the association are the principle underlying the connections inside the memory between certain ideas, feelings, or behaviors.
Aristotle's analysis of gaining knowledge of memory consists of four laws of association: the legal guidelines of continuity, assessment, frequency, and similarity. Accounting for learning and reminiscence in phrases of such legal guidelines of affiliation is referred to as institutions.
Learn more about Aristotle here brainly.com/question/13118125
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