We need options :) but stem cells are a amazing type of cells that are able to develop into many different types of cells <span>First, they are unspecialized cells capable of renewing themselves through </span>cell division<span>, sometimes after long periods of inactivity. Second, under certain physiologic or experimental conditions, they can be induced to become tissue- or organ-specific cells with special functions. In some organs, such as the gut and bone marrow, stem cells regularly divide to repair and replace worn out or damaged tissues. In other organs, however, such as the pancreas and the heart, stem cells only divide under special conditions.</span>
Answer:
The digestive system works very closely with the circulatory system to get the absorbed nutrients distributed through your body. ... While the digestive system collects and removes undigested solids, the excretory system filters compounds from the blood stream and collects them in urine.
The main reason is because they are heavy, and because they don't have to chase their food. They're not predators and their shells give them protection like running away gives protection to other herbivores.
Answer:
Cell theory
Explanation:
Also known as the cell membrane.
<span>If a person has type B blood, only anti-A antibodies are present in his or her blood.</span>
