A. Earth's magnetic field reverses over time; the changes show that seafloor spreading has taken place over time.
Explanation:
The pattern of the magnetic minerals in seafloor ridges are aligned in a repeating pattern because the earth's magnetic field reverses overtime.
This provides evidence because the changes shows that the sea floor spreading has taken place over time.
- The concept of sea floor spreading was first suggested by Harry Hess in the early 1960's.
- Using sophisticated tools, he was able to discover stripe patterns of magnetic minerals in rocks.
- The earth can be likened to a giant bar magnet
- The geomagnetic field originates from the core where the movement of molten metals induces magnetism.
- In a fresh cooling magma, the metallic minerals are able to align their domains with the prevailing magnetic field.
- At some point the magnetic field is normal with a very strong intensity. At other times the intensity is low and it reverses.
- The minerals keeps track of the changes.
- This leads to striped pattern that has been used to suggest sea floor spreading.
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Answer:
A. three of them would belong to blood group B
Explanation:
In a punnet square it would result in:
B b
B BB Bb
b Bb bb
Answer:
The correct answer is option C. gibberellin.
Explanation:
Gibberellin is a type of fungal and plant growth hormone. Gibberellin is one of five main groups of plant hormones.
Gibberellin has different functions and roles in plant growth and regulation such as stem elongation, stem germination, fruit ripening, and flowering.
The gibberellin acid class of hormones has been commonly used in the control of flowering in several species by the florist,
Thus, the correct answer is option C.
- Ureter transfer the urine from out kidney to the uninary bladder
-Urinary bladder's responsibility is to keep the urine until its full
-Uretra channels the urine out of the body..
Answer:
256
Explanation:
==>Trout population:
In 1992, we have 4
In 1993, we have 16
In 1994, we have 64
==>Required:
Population if trout in 1995
Thus, since we are told that the population growth is exponential, and looking at how the popuation increased from 1992 to 1994, we can see that the population increased yearly in the multiples of 4.
=> 4, 16, 64, ?
The next number in this series of exponential growth which represents the population in 1995 would be 256. I.e. (4)⁴ = 4*4*4*4 = 256
Population of trout in 1995 = 256
