Answer: Cells are the basic building blocks of all living things. The human body is composed of trillions of cells. ... Cells have many parts, each with a different function. Some of these parts, called organelles, are specialized structures that perform certain tasks within the cell.
Explanation:
Introduction
the introduction is the first part of a paper stating what you know or the facts
In a scientific study, a conclusion can state a theory
<span>CAT scans find those abnormalities</span>
The greenhouse occasion by gas