Answer:
(A) By blocking all sunlight and killing the bottom plants
causing no oxygen to go into the water
Answer:
Prefontral brain cortex and the brain tonsil
Explanation:
During the adolescence years, the brain continuous to grow like the rest of the body. This part of the brain is the responsible for the attention, the control of the impulses, the ability to plan for future and the consequences of the acts. This is the reason why in some occasions the teenagers have change of mood so quickly.
The brain tonsil controls the emotions, the impulses and the aggression, this also another reason why the teenagers in some occasions can overreact in situations that are no so critical.
For this behavior the specialist recommended environments in which the children can be direct in a positive education to control their impulses.
Answer:
Infectious dose refers to the minimum number or amount of pathogens required in order to produce a disease or its symptoms. In the given case, the bacterium is non-resistant and is treated with antibiotics.
The antibiotics help in neutralizing the infectious agents; however, full course should be done to eliminate the infectious agent completely out of the body.
If the course is left in between then, there are very high chances that some bacteria may survive. They might not produce disease or symptoms as they would be less than infectious dose.
However, with time, the survived bacteria gain more and more mutations during replication which can develop antibiotic resistance capability in them.
In addition, it is also possible that the survived bacteria can get R-plasmid (which has antibiotic resistant gene) from body's normal flora or from any other infectious agent present in the body by the process of transformation or conjugation.
The R-plasmid enables them to survive even in the presence of antibiotics due to which the treatment of the disease might become difficult.
The cell nucleus acts like the brain of the cell. It helps control eating, movement, and reproduction. It contains the genetic material and controls the function of the cell.
The process of osmosis is the movement of water through a selectively permeable membrane from an area of higher concentration to an area of lower concentration.
If 1% sugar solution is placed in pure water, then there would be a higher concentration of water molecules outside the cell compared to inside the cell. The solution outside the cell would be hypo-tonic (containing fewer solute molecules than inside the cell). Water will move into the cell by inward osmosis and the cell would then swell.
