Nerve
Damage to nerve and blood vessels can cause lack of feeling in the extremities resulting in amputations.
Nerves are cable-like bundle of axons and specialized cells (neurons) which make up the nervous system. Nerves transmit messages as electrical signals from one area of the body to another. Nerves are classified into three groups based on the area that messages are conducted. They include; afferent nerves, efferent nerves, and mixed nerves which contain both afferent and efferent axons.
Option A Base pair substitution
Answer:
A,to have more available cell membrane to transfer substance such as waste in waste out of the cells
The hydrosphere makes up all of earths water, and has a secondary sphere called the cryosphere which encompasses all of Earth’s ice. This is important for all living things. Aquatic life lives in water, and land animals drink it to survive.
Answer:
1. Magnesium and oxygen atoms bond to form an ionic compound; this is evident because one forms a cation and the other an anion. When an ionic compound is formed, one atom "steals" an electron (or electrons) from another. In this case, an oxygen atom (which is pretty electronegative by the way) "steals" 2 electrons from a magnesium atom. The resulting oxygen anion and magnesium cation attract one another to form a bond (more specifically, an ionic one).
2. The oxygen atom needed two sodium atoms to bond because it needs two additional electrons to achieve a stable octet of electrons. 1 sodium atom provides 1 additional electron after it is "stolen" by oxygen, so 2 sodium atoms are needed in total to form the bond.
3. The magnesium atom needed two fluorine atoms to bond because it needs to lose two electrons to achieve a stable configuration/octet of electrons. 1 fluorine atom "steals" one electron, so 2 are needed in total.
Happy Holidays!
