Answer:
A) Reaction X used a catalyst
Explanation:
Reaction X has a lower activation energy and the most likely cause of this would be a catalyst.
Heliocentric theory thank you for your time .
<span> </span>A high metabolic
rate means that the cells in the tissue will needs a high rate of gas exchange
as the cells will be producing a high amount of CO2 during production of energy. The dense network of capillaries ensure that
the cells are adequately provided with oxygen.
Answer: 4 sources energy the first the sun sencod wind third batteries fourth a wind mill
Explanation:because all of these give off energy
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Answer:</h2><h2 />

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_____________________________________</h2><h2>REPLICATION</h2><h3>---------------------------------------------------------------------------------------------</h3><h3>Definition:</h3>
DNA replication is the process by which a double-stranded molecule of a DNA is replicated(copied) to produce two morphologically and chemically identical DNA molecules.
<h3>__________________________________________________</h3><h3>Why is it Important:</h3>
Replication is a very important process for the living organism, because in a cell division, the two new daughter cells are produced which must contain the same genetic information or the DNA just like the parent cell. It cant be less or more than the parent cell.
<h3>__________________________________________________</h3><h3>Steps of Replication:</h3>
Replication occurs in three major steps,
1- the opening of the double helix and separation of the DNA strands,
2- the priming of the template strand.
3- the assembly of the new DNA segment.
<h2>_____________________________________</h2><h2>Best Regards</h2><h2>'Borz'</h2>