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nikdorinn [45]
3 years ago
8

Identify all of the different observations used to support harry hess' theory of seafloor spreading.

Biology
1 answer:
Gnoma [55]3 years ago
5 0
In the 1960s Hess proposed that the crust separates along the rifts in the mid ocean ridges and that new seafloor forms by upwelling of hot new crust into these cracks. Magnetic anomaly patterns on the sea floor provide evidence. They are peculiar banded magnetic patterns found on the sea floor. By using the age of magnetic reversals they could calculate the rate of seafloor spreading using the equation speed=distance/time. Another line of evidence is the fact that rocks closest to the spreading ridge are younger and older rocks are further away. <span />
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Sunny_sXe [5.5K]

Answer:

Part 1.  The amount of calcium is independent variable.

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An independent variable is a variable in an experiment which is changed to see its effects on dependent variable.

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So the concentration of calcium will be independent variable.

Part 2.

The risk of bone fractures is could be changed with calcium.

Explanation:

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Dependent variable are results of experiment which can be changed by independent variable.

As in experiment, Calcium concentration is independent variable.

So the risk of osteoporosis depends can change with calcium.

4 0
2 years ago
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3 years ago
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The answer you are looking for is nucleus
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