In sonography, high frequency sound waves are being used in order to generate images of organs, tissues or any parts inside the body. This is a common diagnostic tool that is done for medical purposes. How this has helped in advance medical science is that, it helps in detecting and determining any abnormalities inside the body without doing a surgery first.
<h2><em><u>In addition to natural factors, human activity can also alter ecosystems. Conduct research on a human activity that currently affects or can theoretically affect your chosen ecosystem. Use your food web model to explain how this change can affect the competition for food resources.</u></em></h2>
