<span>A. the measure of the acidity or alkalinity of soil Alkalinity is the name given to the quantitative capacity of an aqueous solution to neutralize an acid.</span>
Answer:
Mantle is the interior solid part of the earth which is present between the earth crust and central core.
Explanation:
There are four layers of the earth i. e. earth crust, Mantle, outer core and inner core. Plants are grown on the earth crust. Mantle is the second layer of earth. The thickess of Mantle is about 2900 kilometers. It occupies more than 84 % of the total volume of the earth.
Answer:
If the mitral valve doesn't close properly, systemic circulation will be affected.
Explanation:
That isn't even possible. Your body is made of them. If you had none then you wouldn't be existing.
Answer:
Explanation:
A gene can be turned on or off by environmental factors or from other cells that activate proteins known as transcription factors.
