Pond water contains a variety of plant and animal life. While some are visible to the plain eye, others require a microscope to observe them. For example, there's bacteria, protozoa, hydras, algae, and arthropods. You will have the opportunity to see a number of microorganisms from both the plant and animal kingdom.
The answer is true for both 13 and 14. im not positive but i have just recently gone over this.
It becomes denser when decreases temperature and increases in salinity. This means that the colder and saltier ocean water is, the denser it becomes.
Structure is a better indicator of shared ancestry than function. When species share the same structure despite not needing similar structures functionally, it shows that there was almost definitely a common ancestor.