Answer:
Oil immediately interferes with physical properties of feathers, hair and respiration, making it impossible for many animals to function properly.
Explanation:
For example, birds such as seabirds and bald eagles have to dive or get in the water at least partially in order to catch the fish they eat. Oil makes it impossible for these birds to locate their prey and when they get in contact with oil it makes it impossible for them to fly and be insulated against the cold. Otters and seals also lose insulation against cold water when their hair gets covered with oil and die of hypothermia. Orcas suffer from skin and eye irritation when they get in contact with oil and it may cause problems if it gets swallowed.
Clearly, an IV solution of D5W (5% dextrose in water) is a clear solution, not light yellow. The nurse should check the patient's chart if the IV fluid ordered is really D5W. If it is confirmed that D5W is the IV fluid of the patient, then the nurse should replace the IV bag with a new one with clear contents and make an entry in the chart about what was observed and why the previous bag was replaced.
Answer:
In 1630 at the beginning of European settlement, about 425,000,000 hectares of the US were forested. By 2017, the area of forested land has declined to 300,000,000 hectares. What is the percent decrease of forested land between 1630 and 2017?
1630= 425000000
2017= 300000000
decrease= 125,000,000
percentage decrease= 125000000/425000000 x 100
percentage decrease= 29.41%
Explanation:
Answer:
Epigenetic effects can be caused by DNA heterochromatin and/or histone silence or activate.
As such, they can different chromosomes or certain chromosomal regions and be responsible for parental imprinting or influencing gene activity in oxidation and reduction.
Patterns of nucleotide demethylation and hypermethylation are often activate when cancer cells are compared to normal cells.
Explanation:
Cells acquire various patterns of gene expression during differentiation to adapt to a changing environment. Epigenetic and genetic alterations are considered as two independent mechanisms that participate in the onset and progression of cancer. Epigenetic mechanisms can be as important for biological events as genetic mechanisms, which do not imply a change in the DNA sequence, but do have an important role in the modification of gene expression.
The correct answer is option D, Speciation
In the allopatric speciation, the geographical barriers such as mountains or rivers causes isolation of the population. The two population groups get completely separate from each other and thus develop different sexual preferences for mating.
