I think your answer is c. Correct me if I am wrong, but I simply subtracted 2081 minus 1997, and got 84 years.
Answer:
See Below
Explanation:
Advantage: Offspring produced will share the characteristic of their parent identically (No need for partnership)
Disadvantage: Limits evolutionary process
Answer:
A mutation is a change in a DNA sequence. Mutations are commonly caused by mistakes during DNA replication. However, they can also be caused by ultraviolet radiation, exposure to chemicals called mutagens, and infection by viruses. But, a mutation usually occurs when a nucleotide in the DNA gets changed, causing the nucleotide sequence to be copied incorrectly which leads to the wrong code for a protein. This can sometimes be fatal.
Hope that helps.
Answer:
c. dilated, constricted
Explanation:
During exercise, more energy is required by skeletal muscles. Oxygen is an important component required for energy production hence supply of oxygen is also increased to skeletal muscles. This is done by increasing the blood flow to skeletal muscles since red blood cells carry oxygen. To increase the blood flow, blood vessels in skeletal muscles are dilated so that more blood can reach them.
Blood vessels of digestive system are constricted because during exercise digestion process is not the priority. More blood should reach skeletal muscles than digestive system.
