<h2>Answer:</h2>
<h3>A. Cell membrane: </h3>
A layer that goes around the liquid that holds the parts of the cell.
<h3>B. Nucleus:</h3>
The structure in a eukaryotic cell.
<h3>C. Eukaryotic Cell:</h3>
A cell. The nucleus...
<h3>D. Prokaryotic cell:</h3>
A cell that does not have a nucleus or organelles.
Explanation:
<em>hope</em><em> </em><em>this</em><em> </em><em>help</em><em> </em><em>you</em><em>. </em>
<em>sorry</em><em> </em><em>if</em><em> </em><em>i'm</em><em> </em><em>wrong</em><em>.</em>
Answer:

point mutation, change within a gene in which one base pair in the DNA sequence is altered. Point mutations are frequently the result of mistakes made during DNA replication, although modification of DNA, such as through exposure to X-rays or to ultraviolet radiation, also can induce point mutations
Answer: Subsistence agriculture.
Explanation: Subsistence agriculture is a type of farming in which farmers cultivate and grow food crops and livestocks to meet their needs and that of their family.
In this type of agriculture, farm products is aimed to survival and it doesn't involve use of large-scale irrigation, chemical fertilizer, or machinery and technology.
Answer:
A concentrated buffer can neutralize more added acid or base than a dilute buffer, because it contains more acid/conjugate base. However, any buffer will lose its effectiveness if too much strong acid or base is added.
Bottom-up processing
top-down processing
I hope this helps and have a wonderful day filled with joy!!