A whale's blowhole is located at the top of its head. The position of the blowhole allows whales to continue breathing while their head is submerged. This trait increases the whale's chance of spotting prey or a predator in the water. The position of the blowhole is . a homologous structure
a sign of poor fitness
caused by artificial selection
an adaptation

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.  

i believe it is c: genes for body color and wing size are inherited separately from each parent.

bacterium is not correct