Answer:
-100
Explanation:
If the total water potential in the soil around a plant root were -50 kPa, water would move from the soil into the root if the water potential inside the root cells were -100 kPa.
The water potential of a substance represents the measure of potential energy in water molecules in a system as compared to that of pure water. It is also a measure of the tendency of water to move from one region to another.
<em>Usually, water will move from the region of high water potential to the region of low water potential. Hence, for water to move from the soil into the root, the root must have a lower water potential than the soil.</em>
The soil had -50 kPa water potential, hence the only option that is lower than -50 kPa is -100.
The correct answer is -100 kPa.
Answer: The nerve pathway followed by a reflex action is called a reflex arc
Explanation: For example, a simple reflex arc happens if we accidentally touch something hot. Receptor in the skin detects a stimulus (the change in temperature).
Answer:
The HIV positive test indicates that individual might suffers from the AIDS ( accquired immuno deficiency syndrome) caused by the HIV ( human immunodeficiency virus). This disease affects the T helper immune cells of the body.
The benefits after the announcement might help the people to increase the awareness about the AIDS. This announcement might rise the hopes that AIDS can be treated after its diagnosis. The drawbacks of this announcement includes his refrain from the society and individual might think that he has been cheated.
Biodegradability and what chemicals are produced when it is broken down.
Answer:
i think its A but i'm not sure.
