I think you forgot to give the options related to the question. So it becomes a bit hard to answer the question perfectly, still i would do my best and hope that it comes to your help. Prior to the ideas presented by Charles Darwin concerning evolution, several alternating theories had been developed and they included all but the DNA differences within a species lead to some individuals being better able to survive. This theory was developed after Darwin came up with his theory..
The correct answer is (d.) innate immunity. The resistance of the skin to the invading organism is innate immunity. The innate immunity is comprising of the cells and mechanism for defending the body from pathogens. The cells recognize and respond to the pathogens that is acting to enter the body.
Answer: A - Isobars
Explanation: Isobars represent patterns of pressure. They show how pressure is changing over space and can help describe the large scale weather patterns across a region in the map.
It is implanted within the Uterus where it will grow into a fetus. Hope this helps! :)
