Answer:
a change to precipitation
Answer:
Option B
Explanation:
Please see the attachment
Magnetic reversals C. PROVIDE STRONG EVIDENCE FOR SEAFLOOR SPREADING.
Magnetic reversal is evident when the <span>change in the Earth's magnetic </span><span>field results in the magnetic </span><span>north being aligned with the geographic south, and the magnetic </span><span>south being aligned with the geographic north. It is also called geomagnetic reversal</span><span>.</span>
Magnetic reversals can occur in less than 100 years. It led to extinction events during the pre-historic times. Because the magnetic field is rapidly weakening, magnetic reversal may cause biblical floods.
Answer:
<u><em>DNA is made of repeating units called nucleotides.</em></u>
Explanation:
DNA can be described as a double helix molecule made up of long polymer chains of nucleotides. The nucleotides which are present in a DNA are:
Adenine (A)
Guanine (G)
Cytosine (C)
Thymine (T)
The hydrogen bonds which occur in the pairing of nucleotides makes the double helix structure of DNA.
Adenine forms hydrogen bonds with Thymine.
Guanine forms hydrogen bonds with Cytosine.
The backbone of the DNA is made up of sugars and phosphates
