ANSWER
Mixture
Explanation: the air is composed of nitrogen and oxygen
Answer:
Water cycle is also called hydrological cycle. In this cycle water moved continuously above the surface of the earth for the continuity of life. Water is evaporated from the sea and ocean in the process of evaporation. This water goes to the atmosphere and form clouds. These clouds moves to hilly areas and comes to the ground in the form of rainfall and snowfall etc. Some water is stored on the mountains in the form of snow and the remaining downward through streams.
Answer:
The correct answer is - option B.
Explanation:
Greenstick fractures are the type of fractures where one side of the cortex is intact and flexed while the other side is fractured. This type of fracture known as the incomplete fracture,
If any fracture have two or more lines of fracture it is called as Comminuted fractures. Impacted fractures have one segment on other. Due to the performing same activity again and again stress fracture occures that is characterized by failure of one cortical bone.
Thus, the correct answer is option B.
Answer:
Atom-Molecule-Organelle-cell-Tissue
Explanation:
Biological is a hierarchical system that arranges biological structures in the order of complexity.
In the given sequence,
- The atom is the simplest and smallest unit
- Molecule-It is made up of two or more atoms
- Organelle-A specialized structure within a cell
- Cell- Is the smallest functioning unit of life and it contains organelles
- Tissue-an assembly of cells that perform a specific function.
