Geography, 12.11.2019 06:31 blackopsty23
The diagram below shows a stack of rock layers. examine the diagram, and answer the question that follows. layer r contains a well-known index fossil that is 100 million years old. based on this information and the principle of superposition, a. layers t, m, x, and g are all older than 100 million years. b. layers t and m are older than 100 million years, and layers x and g are younger than 100 million years. c. layers t, m, x, and g are all younger than 100 million years. d. layers t and m are younger than 100 million years, and layers x and g are older than 100 million years.
Answers: 2
Geography, 22.06.2019 14:40, thezbell
Geologists know that potassium-40 decays to argon-40, with a half-life of 1.3 billion years. if an analysis of a feldspar crystal in a sample of granite shows that 75 percent of the potassium-40 atoms have decayed to form argon-40, what is the age of the granite
Answers: 2
Geography, 23.06.2019 18:30, kreshnikolloma
Answer this asap. why did the americans go to china? a. trading b. exploration c. land d. live stock
Answers: 1
Geography, 23.06.2019 19:30, markleal57151
This is a 2017 topographic map of puerto rico in the united states, and i'm sorry that people there have suffered such a disaster. i want to ask, what do the yellow dots and areas represent on this graph? and the blue area and the little blue circle, and the little blue sign that looks like a signal tower, what do they stand for?
Answers: 2
Geography, 24.06.2019 11:30, animaljamissofab
In africa what do they call a crop grown for direct sale and not for use?
Answers: 1
The diagram below shows a stack of rock layers. examine the diagram, and answer the question that fo...
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