Answer:
Efficiency is the percentage of energy actually used to perform the work.
The zygote, a single cell, implants its self to the uterine wall and it developes into an embyro which is a cluster of cells.
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>
Answer: The literal reason would be because our ancestors did. The ancestors of all modern mammals had five digits on each limb up to 360 million years ago.
Explanation:
