The roots of a plant grow toward a source of water.
2. The body temperature of a dog is more stable than the temperature of its environment.
3. A cat is composed of organ systems, which are composed of organs, which are composed of tissues, which are composed of cells.
4. A bacterial cell divides to form two new cells.
5. In order to carry out essential life functions such as growth, development, and movement, a duck must eat.

Question

The roots of a plant grow toward a source of water.
2. The body temperature of a dog is more stable than the temperature of its environment.
3. A cat is composed of organ systems, which are composed of organs, which are composed of tissues, which are composed of cells. 
4. A bacterial cell divides to form two new cells.
5. In order to carry out essential life functions such as growth, development, and movement, a duck must eat.