Water Living organizms Soil Atmosphere Solor Radiation
1) Predators 2) Prey
Microfilaments and microtubules.
The two main components of blood are: Cells or cell-like bodies: These include Erythrocytes, Leukocytes and thrombocytes ( Thrombocytes are not cells but pieces of large cells called megakaryocytes.)...
The CPU and Memory. But generally you also need an Input device and an Output device.