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Setler [38]
2 years ago
7

There are many diseases that can affect the eyesight of people this diseases are often caused by many different things such as p

oor nutrition hereditary or accidents choose a disease that affects the eye and research III then write a informational brochure about disease your groceries should include with the disease is and how it is affected how the disease can be treated if the disease can be prevented effect has in eyesight with you or disease in any other information about the disease
Biology
1 answer:
svet-max [94.6K]2 years ago
4 0
More than 4.2 million Americans aged 40 years and older are either legally blind (having best-corrected visual acuity of 6/60 or worse (=20/200) in the better-seeing eye) or are with low vision (having best-corrected visual acuity less than 6/12 (<20/40) in the better-seeing eye, excluding those who were categorized as being blind).
The leading causes of blindness and low vision in the United States are primarily age-related eye diseases such as age-related macular degeneration, cataract, diabetic retinopathy, and glaucoma. Other common eye disorders include amblyopia and strabismus.
Click here to see the anatomy the eye and how the eyes work.external icon

Refractive Errors
Refractive Errors
Refractive errors are the most frequent eye problems in the United States. Refractive errors include myopia (near-sightedness), hyperopia (farsightedness), astigmatism (distorted vision at all distances), and presbyopia that occurs between age 40–50 years (loss of the ability to focus up close, inability to read letters of the phone book, need to hold newspaper farther away to see clearly) can be corrected by eyeglasses, contact lenses, or in some cases surgery. The National Eye Institute states that proper refractive correction could improve vision among 150 million Americans.
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Match the following. 1. period during the life of a cell when it has finished mitotic division G1 phase 2. period during the lif
zimovet [89]

Ans.

The cell cycle includes a series of events that results in the formation of daughter cells from a single parent cell. These events include interphase, followed by M phase. The interphase consists of three phases, G0 (Gap 0) phase, G1 phase, S (synthesis) phase, G2 phase, while the M phase consists two phases, karyokinesis (mitotic or meiotic phase) and cytokinesis. At the end of cell cycle, cell enters into G0 phase again and the cycle goes subsequently.

The sequesnce of cell cycle events can be written as follows:

G0→G1→S→G2→M→G0→G1→....

Thus, according to the cell cycle sequence, these terms can be matched as:

1. When a cell finishes its mitotic division, it enters to G0 phase, which is also known as rest phase. Thus, statement 1. matches with G0 phase.

2. The period between end of mitosis and synthesis of genetic material for next mitotic division shows G1 phase, in which cell prepares itself for division. Thus, statement 2. matches with G1 phase.

3. The period of interphase between synthesis of new genetic material and the beginning of mitosis is G2. Thus, statement 3. matches with G2 phase.

4. The period between two mitotic division is interphase. Thus, statement 4. matches with interphase.

5. The period of cell division, during which a cell is performing actual cell division is M phase. Thus, statement 5. matches with M phase.

6. The period of interphase, during which genetic material gets doubled is synthesis or S phase. Thus, statement 6. matches with S phase.


6 0
3 years ago
Read 2 more answers
Ions are defined as _____. atoms that have lost or gained an electron and have a charge. neutral atoms atoms that are bonded to
Lady_Fox [76]

Answer:

an atom or molecule with a net electric charge due to the loss or gain of one or more electrons.

Explanation:

3 0
3 years ago
What would happen if humans were made of prokaryotic cells
bixtya [17]
Oooh really a interesting thing if we were made of prokaryotic cells ....
as we know, prokaryotic cells lacks nucleus and membrane bound organelles.
The majority of prokaryotic <span><span><span><span>DNA </span></span></span></span><span>is found in a central region of the cell called the </span>nucleoid. Then we are not able to do activities like now we do bcz if we  lacks a true nucleus which contains our all genetic info: we are just like prokaryotic organisms....
5 0
3 years ago
Which THREE statements correctly describe the properties of water?
grandymaker [24]
<em>CORRECT STATEMENTS
> Water forms hydrogen bonds with other polar molecules. </em>
<em>> Water is a polar molecule. </em>
<em>> Water dissolves more ionic compounds.</em> 

<em />Water is a polar molecule because of its uneven distribution of electron density. It is made up of two hydrogen atoms and one positive atom.
Since water is a polar molecule, it forms hydrogen bonds with other polar molecules. Though these bonds are relatively weak, however, there are so many of them present in water. 
Water also dissolves most ionic compounds due to the fact that water is a universal solvent. When these compounds are added to water, there will be an interaction between the individual ions and the polar regions of the water molecules and disrupts the ionic bonds. 

<em>INCORRECT </em>
> Liquid water is less dense than water vapor. - Liquid water has a higher density than water vapor. The fact that water vapor rises indicates that it is less dense than water.

>Water dissolves more hydrophobic substances. - Hydrophobic substances do not dissolve easily in water. It is termed as 'hydrophobic" because it means water-fearing. 

7 0
3 years ago
A valley is noticeably lower than the surrounding area. What is one way a valley might form?
ratelena [41]
Though erosion due to water
4 0
3 years ago
Read 2 more answers
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