Answer:
absolute brightness
Explanation:
The observational fact about a cepheid variable star that leads to a measurement of its distance from earth is that its period of variation is directly related to its absolute brightness
The spread began in the 7th to 9th century, originally brought to North Africa under the Umayyad Dynasty. Trade networks were extensive, spanning through north and west Africa which created a medium in which islam peacefully spread through the merchant class.
No. There are to many people in the world with different political views for everyone to have one common mind set
Answer:
Petroleum Jelly
Explanation:
Petroleum jelly is made from the non-renewable resource, Coal. Apples are made from trees, which can be replaced, maple syrup is made from trees, and cotton is made from a plant. Coal, cannot reproduce.
Answer:
Topographic Maps
A topographic map is similar to a physical map in that it shows different physical landscape features.
Explanation:
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