Answer:
You should say NO in a firm voice because they will know that you are positive in your decision and hopefully they will leave you alone. If they don't then that is when you start taking other steps in order to avoid peer pressure. I hope this helps!
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1 bactericidal are solutions used to Kill micro organism by killing the cell walls. while in the other hand bacteriostatic agent is used to inhibit the growth of micro organisms by interfering with their cellular metabolism like replicating their DNA reproduction.
2 bactericidal decreases the number of bacteria in the body while the other does not rather it decreases the growth of it.
Answer:
The concentration gradient is the driving force.
Explanation:
Passive transport of substance occurs when they are moved from the region of their higher concentration to that of their lower concentration. The concentration gradient is the difference in the concentration of substances between two regions or across the membrane. The concentration gradient of substances drives their passive movement. The passive movement of substances does not use metabolic energy. Simple diffusion and facilitated diffusion are two examples of this transport.
Answer:
The semi-plastic rock of the mantle behaves like water being heated. The lower mantle is hotter than upper mantle because it is closer to the hotter core of the earth. Therefore, this part of the mantle is less dense and tends to rise as the upper cooler denser mantle close to the crust sink to the bottom. These convection currents are similar to those of water in a container being heated from below.
The circular motion of these currents tends to drag along the crust due to force of friction between the lower crust and upper mantle. This is what powers tectonic plate movements. When two plates are driven by currents that intersect and churn in the same direction, they collide, at a convergent boundary as shown in position D in the illustration. The denser plate is subducted beneath the other. At position E, two plates are moving away from each other (called a divergent boundary) because each plate is being driven by a different convention current in the mantle. These current are cycling in opposing directions (one clockwise the other anti-clockwise).
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