Covalent bond = a bond in which the electrons are shared by the partner atoms.
<span>Polar bond = simply a type of covalent bond in which the electrons are </span>
<span>shared but not equally. This happens when two different atoms come </span>
<span>together, such a C and O. Each atom has a different ability to draw </span>
<span>electrons to itself when it shares electrons (that drawing ability is </span>
<span>called Electronegativity). </span>
The answer is the epididymis. It is a contracted, tightly-coiled tube linking back of the testicles to the deferent duct (vas deferens). The epididymis contains three parts and these are the head, body, and tail. The head of the epididymis is positioned on larger pole of testis. It stocks sperm for maturation.
The answer is B because men only have one X chromosome. Their chromosomes are xy.
Low levels of estrogen is a sign that the ovaries of a woman are beginning to fail. This is a common occurrence when one is at menopausal stage. Estrogen and progesterone naturally decrease and eventually stops the menstrual cycle. Hope this helped.
Answer:C
Explanation: those species have similar characteristics therefore placed in the same group
