How might genetic drift be important in a small population?
1. It increases genetic diversity by introducing alleles from one population into another.
2. It decreases genetic diversity only by reducing population size.
3. It decreases genetic diversity via sampling error during mating.
4. It increases genetic diversity by introducing new genes into the DNA of a species.

3. It decreases genetic diversity via sampling error during mating.

Explanation:

Genetic drift is important in small population because it decreases genetic diversity via sampling error during mating from generation to generation.

Genetic drift is defined as a change in the allele frequency of a population as a result of sampling error across different generations.

For a small population that already has low number of alleles, genetic drift leads to the fixation of alleles within the population, increases inbreeding coefficients and increases the chance of homozygosity within the population thereby reducing the overall genetic diversity of the population.

answer:

the water molecules are transferred from the roots to the stem or top parts of the tall tree because of important properties of water which are adhesion, cohesion and capillary action. cohesion is the property of water molecules keeps water molecules in a combined state by sharing of bonds between them at the atomic level. adhesion allows the interaction of water molecules with other substances or substrate. adhesion will cause the attachment of water molecules to the wall of the vessel (xylem) of the plant. capillary action occurs when the adhesive force to the vessel wall is stronger than the cohesive force between water molecules. capillary action mimics the transfer of water from a tube or pipe. in this way water utilizes its property to transfer water from down to top level of the plant.