Potassium in the cell and sodium extracellularly
Answer:
A is the answer
Explanation:
a line is a infinetly thin infinetly long straight line.
Explanation:
To live in a better and less polluted environment.
Answer:
Faltworms rely on difussion to transport oxygen and nutrients to their internal tissue and to get rid of carbon dioxide and other wastes from their body . Flateworms have no heart ,blood, blood vessels, grills , or other respiratory systems. Flatworms have flame cells. Flame cells are specialized cells that remove and purify excess water from the body.
Answer:
An organ or bone that appears in different animals.
Explanation:
A homologous structure is an example of an organ or bone that appears in different animals, underlining anatomical commonalities demonstrating descent from a common ancestor. In other words, it's when very different animals have bones that appear very similar in form or function and seem to be related.
