Answer:
The two fused segments are the thorax and the abdomen. These form a segment called the "cephalothoraxes".
Explanation:
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The two zones are The unsaturated zone and The saturated zone.
I think you may be talking about <span>VILLI.</span>
Muscle cramp refers to the sudden contraction of an involuntary muscle. It can be caused by many factors including inadequate presence of some minerals such as calcium in the body; it can also be caused by poor circulation.
Straightening an althelete's leg and rubbing it vigorously make the muscle to relax and to snap back in place.
When many water molecules come into contact with one another "they get attracted to each other".
<u>Explanation:</u>
When water molecules reach into contact of each other they start attracting each other with proper orientation as the positive end of hydrogen atom of one molecule coordinate or get attached with negative end of oxygen atom of another water molecule. This link also termed as "hydrogen bond".
These attractions or hydrogen bonds showcase the ease of polarity. But the interactions are considered as weak that form between a partial positive charge of hydrogen with a more electronegative atom like oxygen, nitrogen and fluorine.