Components of the Skeletal System. The skeletal system is composed of four main fibrous and mineralized connective tissues : bones, ligaments, tendons, and joints. Bone: A rigid form of connective tissue that is part of the skeletal system of vertebrates and is composed principally of calcium.
Opportunity cost
Opportunity cost is the benefit, profit or value that could have been received or obtained but instead given up in favor of another alternative or course of action. Every situation has several alternatives and every resource has several alternative uses as well. Thus, every decision comes with it an opportunity cost. <span>
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Cells are composed of water, inorganic ions<span>, and carbon-containing (organic) molecules. Water is the most abundant molecule in cells, accounting for 70% or more of total cell mass.</span>
Answer:
a., c.
Explanation:
P1V1 =P2V2 is true when T is constant and number of moles n is constant also.
<span>This question has the following options:
A.The two electrons in one orbital must have opposite spin.
B.The two electrons in one orbital must have the same spin.
C.The two electrons in one orbital can have either opposite or the same spin.
D.The two electrons in one orbital repel each other if they have opposite spin.
E.The two electrons in one orbital attract each other if they have the same spin.
The correct answer to this item is letter A. Two electrons in one orbital must have opposite spin. This means that when one electron is assigned to have an up-spin, then the other must have a down-spin.</span>
