D. before cells without a true nucleus
Answer:
According to Lamarck, organisms altered their behavior in response to environmental change. ... Their changed behavior, in turn, modified their organs, and their offspring inherited those "improved" structures.
Answer:
<em><u>FACT</u></em>
Explanation:
<h3>Cells as Building Blocks</h3>
<h3>A living thing, whether made of one cell (like bacteria) or many cells (like a human), is called an organism. Thus, cells are the basic building blocks of all organisms</h3>