Answer:
The correct answer is C. hormones
Explanation:
Sebaceous gland called oil glands are present in the skin which at the time of puberty cause higher sebum production which cause acne. So at the time of puberty hormonal change occurs and androgen level like testosterone level becomes high in the body.
This high level of androgen cause rise in the production of sebum from sebaceous glands and cause inflammation in that region and allow the colonization of bacteria like <em>Propionibacterium acnes</em> which results in the formation of acne. So hormonal change cause acne therefore the right answer is C.
Answer:
0.3 m
Explanation:
When a person is myopic it means that light rays from distant object are focused in front of retina so in order to correct this, we use concave lens. The concave lenses focuses these rays on the retina.
Wearing glasses will not change the eye in any way. The diverging lens is simply used to form an image of the object at a distance where the myopic person can see it clearly. Another myopic individual that is not wearing a lens can see clearly objects that fall between their near point and their far point, as well as an individual wearing glasses can see images that fall between their near point and their far point.
Lens' power= -3 diopters = 1/ focal length,f.
Therefore, f= 1/-3 = - 0.3
Far point = -(-0.3) = 0.3 m
Bruce, demetria and william - the only ones that make sense
Answer:
In the recent years,advances in the agricultural field as well as genetic engineering field has made it possible to produce large number of crops which have increases source of nutrition in them. Due to this, conditions such as famine re being completely eradicated from the world. During the previous times, we see how enormous number of deaths were caused just due to lack of food and famine conditions.But in today's world, we hardly hear that a country has been hit by famine. Although some countries still have malnutrition in them but these situations are being tackled. Hence, easy access to food resources has turned the rich man diseases to become poor man's diseases too.
