Answer:
B. Interneurons
Explanation:
The basic unit of the central nervous system is the neuron or the nerve cells. Billions of neurons allow the different parts of the body to communicate with each other via the brain and the spinal cord. A fatty material called myelin coats nerve cells to insulate them and to allow nerves to communicate quickly.
ChamberA space or room within the heart.
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Answer:
Row 1: Any blood type except AB
Row 2: Blood type A/AB
Row 3: Any blood type except AB
Row 4: Any blood type
Row 5: AB/B
Explanation:
1. If the blood type was AB for the first one (two dominant alleles) then O could not appear as it is recessive.
2. The blood type must contain at least one A allele as AB is obtained from I^A and I^B (already provided by the mother).
3. Once again, the blood type must carry at least one recessive O allele for the O blood type to occur in this child.
4. As long as the blood type either carries a recessive O or another B, the blood type will result in a B.
5. The blood type of the father must contain at least one B for the child to have a B blood type.
Answer:
Natural Selection or Adaptation
Explanation:
Because they change their fur color so predators cant find them as good
Covalent bonding occurs when pairs of electrons are shared by atoms. Atoms will covalently bond with other atoms in order to gain more stability, which is gained by forming a full electron shell. By sharing their outer most (valence) electrons, atoms can fill up their outer electron shell and gain stability.