Answer:
x= 0, y = 2
Explanation:
4x + 5y +2 = 12
Let's suppose that
x = 0
y = 2
By putting the values of x and y
4(0) + 5( 2) + 2 = 12
0 + 10 + 2 = 12
12 = 12
Hence, it is proved that x = 0 and y = 2
Answer:
d. Fluoride becomes incorporated into the crystalline structure of teeth, making them less susceptible to decay
Explanation:
Dental caries results when cariogenic (caries-causing) bacteria metabolize carbohydrates or sugars present in the mouth for their energy needs, producing organic acids as byproducts, thus lowering the pH of the plaque biofilm.
The hydroxyapatite of tooth enamel is composed mainly of phosphate ions (PO₄³⁻) and calcium ions (Ca⁺). Under normal conditions, there is a stable equilibrium between the calcium and phosphate ions in saliva and the crystalline hydroxyapatite. At low pH (acidic conditions), there is a shift in equilibrium resulting in the dissolution of hydroxyapatite from tooth enamel, a process known as demineralization. A reverse process called remineralization (the process of incorporation of minerals in tooth enamel) occurs when the saliva, acting as a buffer elevates pH. When equilibrium is shifted to favor continued demineralization, dental caries results.
However, when fluoride is present in saliva, fluorapatite, rather than hydroxyapatite, forms during the remineralization process as fluoride ions replace hydroxyl groups in the formation of the apatite crystal lattice.
Fluorapatite is less soluble than hydroxyapatite making it more resistant to demineralization, even under conditions of low pH. Thus, fluoride acts as an effective anticaries agent.
Mudflow is the correct answer bud.
Explanation:
candidate 4 inner ear surgery = inner ear
because inner ear is what helps you hear sound, more so than outer ear.
outer ear= ( like a speaker to capture sound).
inner ear = complex structures & bones to help process sound to brain...
depending on circumstances, drs may let each structure heal b4 next surgery, takes 6 wks
or more 2 heal if all goes as planned.
shud take a year 2 complete healing. meaning ; drainage tubes have 2 b inserted for drainage of infectious substances.
start with inner 1st then outward. protecting inner structures..
Answer:
Genes play an important role in determining physical traits — how we look —and lots of other stuff about us. They carry information that makes you who you are and what you look like: curly or straight hair, long or short legs, even how you might smile or laugh. Many of these things are passed from one generation to the next in a family by genes. Most cells have one nucleus. The nucleus is a small egg-shaped structure inside the cell which acts like the brain of the cell. It tells every part of the cell what to do. It contains our chromosomes and genes. Chromosomes come in matching sets of pairs and there are hundreds (sometimes thousands) of genes in just one chromosome. The chromosomes and genes are made of DNA.
