Answer:
The correct option is A. Cooler, more dense material sink while warmer, less dense material rises.
Explanation:
Convection can simply be described as the transfer of heat energy among molecules or substances. Convection will occur if molecules of liquid or gas are given rough supply of heat. Hot liquids or gases would have the following properties:
- Their density would be less.
- They would have the ability to rise.
Whereas the cooler molecules will have the following properties:
- Their density would be more than the hot molecules.
- They would have the ability to sink.
Answer:
A parasitic bacteria contaminated her food.
Explanation:
A parasitic organism is that which derives nutrients from another, usually called a host, by harming it. In this case of Arainne who fell sick after traveling abroad and eating different countries' food, it indicates that a microbe that is harming her (leading to health complications) has contaminated her food.
Contrary to a parasitic organism, a mutualistic and commensalistic organism will not cause harm to any organism they interact with. Only a parasite will deteriorate the health and physical well being of its host in the process of obtaining nutrients. A predatorial organism kills its pretty, which is not the case here.
Therefore, Arianne's current health condition is as a result of the contamination of the food she ate by a parasitic bacteria.
Meridian
Called the international date line
Runs through the Pacific Ocean
Answer:
<em>the </em><em>correct</em><em> answer</em><em> </em><em>is </em><em>The </em><em>SI </em><em>unit </em><em>of</em><em> </em><em>speed</em><em> </em><em>is </em><em>metre</em><em> </em><em>per</em><em> </em><em>second,</em><em> but</em><em> </em><em>the</em><em> </em><em>most</em><em> </em><em>common</em><em> </em><em>unit</em><em> of</em><em> speed</em><em> </em><em>in </em><em>everyday</em><em> </em><em>usage</em><em> </em><em>is </em><em>kilometre</em><em> </em><em>per </em><em>hour </em><em>or,</em><em> </em><em>in </em><em>the</em><em> </em><em>US </em><em> </em><em>and </em><em>the </em><em>UK,</em><em> </em><em>miles</em><em> </em><em>per</em><em> hour</em><em>.</em>
Explanation:
<em><u>I </u></em><em><u>glad</u></em><em><u> to</u></em><em><u> help</u></em><em><u> you</u></em><em><u>!</u></em><em><u>!</u></em><em><u>!</u></em><em><u>!</u></em><em><u>!</u></em><em><u>!</u></em><em><u>!</u></em><em><u>!</u></em><em><u>!</u></em><em><u>!</u></em>
