The cells that are responsible for attacking, adhering and digesting foreign bodies are the phagocytes. The platelets help wounds to heal and prevent bleeding and the main function of the erythrocytes is the transport of oxygen
Answer:
If the frequency of a wave increases while its speed remains constant, the wavelength decreases i.e. the distance between successive crests decreases.
Explanation:
An accurate description of the physical characteristics of Poland is mainly flat landscape, fertile soil except in the east and northeast, many lakes, large deposits of coal, sulfur, and copper, a mountainous region in the south. <span>Coal is Poland's most important mineral resource.</span>
