Hadean is the first eon of precambrian, and took place around 4.6 and 4.0 billion years ago.
Answer:
Option (A).
Explanation:
Gym or exercise is important for all the individual to stay fit and healthy. Regular exercises in gym reduce the chances of heart attack and also control the obesity problem.
The gym should be located in well developed area free from any pollution and safety is the most important in any gym. The equipment used in gym must be of best quality and the trainers should explain each and every exercise necessary for the individual. The room temperature should be well maintained and properly ventilated.
Thus, the correct answer is option (A).
The change in the composition of species in the community over time is the best answer
The most important function of osmosis is stabilising the internal environment of an organism by keeping the water and intercellular fluids levels balanced. In all living organisms, nutrients and minerals make their way to the cells because of osmosis. This obviously is essential to the survival of a cell.
Answer:
A gene codes for a particular protein that is involved in the expression of a trait. Characteristics determined by single genes are called Mendelian traits.
Explanation:
