Examlex
A chemist makes a mixture of concentrated hydrochloric acid and distilled water so that the ratio of acid to water is 4 to 3. If he starts with 20 liters of acid, how much water is mixed with the acid?
Puberty
The developmental stage marking the onset of sexual maturity and the ability to reproduce, accompanied by physical and hormonal changes.
Genetic Influences
The contribution of genes inherited from parents to the physical and behavioral characteristics of an individual.
Individual Differences
Variabilities or variations among individuals in behaviour, biology, and physiology.
Sibling Rivalry
Competition, jealousy, and conflict between brothers and sisters, which is a common phenomenon in families.
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