1. the independent variable (the thing the person is changing) is the different type of mouthwash. the dependant variable (the affect of the independent variable) is how much bacteria the mouthwash kills
2. the independent variable for this one would be the plants growing in soil or water, and the dependant variable is how do the plants grow.
A high heritability coefficient can result when the trait varies greatly across individuals or when genes are important in an absolute sense.
What is heritability coefficient ?
The degree to which genetic variations among persons may adequately explain the variations in their attributes is known as heritability. Heritability, which is denoted by the statistic h2 in science, describes the proportion of a trait's variation that can be attributable to genetic variation. An estimation of a trait's heritability is particular to one population in a particular setting, and it might alter over time as conditions change.
Estimates of heritability range from 0 to 1. When a variable's heritability is near to zero, it means that environmental influences, rather than genetic differences, account for the majority of a person's variation in that trait. A heritability that is close to one means that genetic differences account for practically all of the variability in a trait and that environmental influences have a negligible role.
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The closing of a plants stomata will prevent plants from taking in (Carbon dioxide) or co2; Without co2, plants cannot make carbohydrates, and plants can only obtain this critical molecule (carbohydrates) when stomata are open. Hope this helps ya out :)
The answer to the question is c) a dendrochronologist interprets tree rings
