Answer:
Option D.
Water and the xylem are both polar. Water molecules have the ability to form hydrogen bonds with each other and with the walls of the xylem.
xylem.
Explanation:
water is able to move upward from the roots of a plant, through its xytem in the stem, and out to the leaves because Water and the xylem are both polar. Water molecules have the ability to form hydrogen bonds with each other and with the walls of the xylem and it is as a result of water covalently bonded to it's molecules which is as a result of unequal sharing of electrons, i.e slightly positive and slightly negative molecules on the side or partly ionic make water and xylem to form intermolecular associations with the wall of xylem which make water to move upward through its xylem in the root, stem.
Every living cell needs water, energy, and food to stay alive.
Recombination
: the process occurring in Meiosis I, in which offspring are able to obtain unique traits resulting in an array of different phenotypes (physical appearances).
Prophase I,
the homologous chromosomes line up in the middle of the cell and exchange segments of alleles, and then lining up in the cell in a NON-uniform way.... therefore resulting in genetically unique offsprings rather than identitical.
Mutations are result of evolutionary factors. They create genetic diversity that helps species adjust to different climates, behaviours and foods. Mutations that occur in a fit indivual can result in offspring that are genetically more successful in adjustments to different climates, foods, and environments.
All in all Recombination results in unique looking indivuals, whereas mutations result in greater survival chances of a species.
The function of chemical substances such as histamine and leukotrienes would be to stimulate inflammation. Leukotrienes is an example of eicosanoids which play a key role in the pathogenesis of inflammation. They are synthesized in the leucocytes from arachidonic acid via the actions of 5-lipoxygenase. The release of histamine serves as an important part of the body's immune response; when the body comes into contact with an allergen, such as pollen or animal dander, histamine is released by the body to the site of contact and triggers inflammation.
The valve that prevents black flow into the right atrium is the tricuspid