Robots in space are devices used to aid, augment and substitute for the astronauts to do difficult tasks such as repairs in dangerous environments, and they capture videos and pictures, All space robots are...
Plant reproduction is the process by which plants generate new individuals, there are two kinds of reproduction in plants which are sexual reproduction and asexual reproduction, The flowers are classified according to sex into three...
Carbon dioxide gas is very necessary for the photosynthesis process of green plants to make their own food, and to build their bodies, It is a chemical compound which its molecule consists of one...
The periscope is an instrument for observation over, around or through the object, obstacle or condition that prevents direct line-of-sight observation from the observer’s current position, The periscope is used to monitor the dangerous...
