D) Thorns are an adaptation that some plants have evolved in order to discourage herbivores from eating the plant.
I believe its D. It becomes more difficult for the cell to get enough oxygen and nutrients.
Yes it can kill brain cells. if you hold your breath for a short amount of time example 10 seconds it won't do any harm. but if you hold your breath for an extended time like a minute the cells will not get enough oxygen and eventually die. I hope I helped you
Answer:
Cells are the basic units of structure and makeup of tissues.
Explanation:
Definition: "...a collection of ideas and conclusions from many different scientists over time that describes cells and how cells operate." - Study.com
Approximately twenty-five elements occur naturally on earth. Remaining elements either have to be synthesized or obtained through chemical reactions.