Effect: Radiogenic heat released- Cause: convection currents cycle through magma.
2.) Effect: Earth has a powerful magnetic field- Cause: Iron in earths outer core swirls due to convection currents.
3.) Effect: tectonic plates move- Cause: unstable isotopes in earth release energy.
: ) I think this is right
A. they are drugs or hormones used to prevent osteoporosis
The answer is A. Putting the aquarium in the dark means that
the aquatic plants will not be able to photosynthesize. The process of photosynthesis produces oxygen
as a by-product. The oxygen is used by the fishes in respiration and release
carbon dioxide. The carbon dioxide is used by the aquatic plants in photosynthesis.
Genetic information is found in DNA, which is found in the nucleus. it could also be chromosomes, however.
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
