The answer is fluorite. If a mineral cannot be scratched by a knife blade but can be scratched by quartz then its hardness is between 5 and 7 on mohs scale. A relative hardness value of 6.5 means that the mineral could scratch orthoclase but not quartz. Flourite hardness on mohs scale is 4, and therefore due to the very low hardness and perfect cleavage of Flourite, special care must be taken to ensure it doesn't get scratched or chipped. It cannot scratch the glass.
"<span>The presence of a distinct pith and cortex in a dicot stem and an undifferentiated ground tissue monocot stem" is the one among the following features that </span><span>differentiates a dicot stem from a monocot stem. The correct option among all the options that are given in the question is the second option or option "B".</span>
Answer:
As the genetic code is similar throughout the species, these species must have inherited the disease from a common ancestor.
Explanation:
Genetics is the study of Genes. Where it clearly mentioned that most of the disease are inherited from grand parents.
Every time we visit a doctor, they ask for medical history where the details of parents regarding their diseases are also asked. This effort is aimed at knowing whether our current disease is inherited or new disease.
A blender can be used to break up the strawberry tissue in the homogenization step, because the strawberry needs to be macerated so that the chemicals used for extraction reach all of its cells more easily.
<h3>What cell structures were disrupted in the strawberry experiment?</h3>
The solution for extracting DNA, also known as the lysis solution, is so named because of its function in disrupting the plasma membrane and other membranes.
With this information, we can conclude that a blender can be used to break up the strawberry tissue in the homogenization step, because the strawberry needs to be macerated so that the chemicals used for extraction reach all of its cells more easily.
Learn more about DNA in brainly.com/question/264225
A tailwind will boost up the speed of the runner while a headwind will slow the runner down.
<h3><u>Explanation:</u></h3>
A tailwind is a wind that is blowing along the direction of the runner approaching. Whereas a headwind is the wind that blows opposite to the runners approach.
This happens because the body is actually running flat to the wind which gives a resistance to the wind flow. So the wind actually pushes the body forward or backward. If the wind is coming from back, the wind pushes the athlete towards front, increasing his speed by a few miles per hour. When the wind is coming from front, the wind is actually pushing the athlete backwards, which decreases the speed.
The wind also makes it difficult for the athlete to breathe, thereby decreasing the speed to a certain extent in general.
