The answer is; A
All living organisms seek energy to maintain life, humans included. This begins from a society that depends on wood and paraffin for energy to those that depend on electricity. When energy is in plentiful, then individuals in the population will not compete and fight for the resource. The price of the resource will also be affordable to the whole population. Therefore, people will be well settled to focus their energies on developing their societies through various economic activities.
B) They permit exchange between the external atmosphere and the circulatory system.
I believe the answer is a) metabolism bc metabolism is when the sum of chemical reactions take place in each cell of a living organism
The human vertebral column is also referred to as the <u><em>spine or spinal column.</em></u>
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The<u> body / spinous process </u>of a typical vertebra forms the rounded, central portion that faces anteriorly in the human vertebral column.
- The <em>human vertebral column</em> is made of up a group or collection of bones called the<u><em> vertebrae</em></u>.
- In humans, we have a total of <u><em>33 vertebrae. </em></u>
- In <u>males </u>humans, the vertebrae are said to be <u>71 cm long</u> while in <u>females</u> it is <u>61 cm long</u>.
Therefore, the<u> body / spinous process </u>of a typical vertebra forms the rounded, central portion that faces anteriorly in the human vertebral column.
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