The statement is - a. True.
Throughout the human history, before the modern age, people were not able to pass great distances or pass certain natural obstacles. This meant that different groups of people that were separated by some big natural barrier where not able to communicate between each other, or the communication was very rare and limited. That resulted in the formation of different cultures, unique, evolved totally independently from one another. There's multiple examples of this, like the Arabian culture which was isolated because of the vast deserts, the Aboriginal culture in Australia which was isolated because of the large water bodies, the Eskimos in North America that were isolated because of the harsh Arctic conditions etc.
D. vacuum packing
Explanation:
The best food preservation technique Andrea should use is vacuum packing.
Vacuum packing is a process in which food substances are preserved in seals where air has been removed.
- Since this is food product, vacuum packing the tomato will sustain the nutritional content of the tomato.
- Inside the vacuum, the tomato can ripen on its own as the hormones are stimulated to start working on their own.
- The organisms which are component of the dirt will not survive the packing due to the absence of oxygen for their life processes.
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Answer:
From lowest to highest grade,
Slate > Phyllite >Schist
Explanation:
The grade of metamorphism is usually studied in the metamorphic type of rocks where the rocks are formed due to the high pressure and temperature condition. These rocks are formed in a sequence from a lower grade to a higher grade. Here the low-grade rocks gradually change to more hard and resistant rock when subjected to extreme pressure-temperature conditions.
In the above, there are 3 metamorphic rock names gives, which can be arranged from a lower grade to higher grade. Slate is a low-grade metamorphic rock that changes into Phyllite, another medium-grained metamorphic rock. This Phyllite again alters to Schist under extreme pressure-temperature conditions.
1. the closing of the Suez Canal by Egypt in 1956
and
2. the OPEC oil embargo in 1973
