The answer is B. They bring oxygen from the air into the body.
The lungs don’t produce or release oxygen so it’s not A. or D. The lungs do not transform oxygen into carbon dioxide cause our bodies need oxygen not carbon dioxide so it’s not C. Hope this helps!
Answer: The person should steer around a breaking wave. This type of waves contains large amount of potential energy that is waiting to be transformed into Kinetic energy, In this case, it can impact the ship with tremendous force.
Explanation: Hope this help :)
ANSWER:
basically a gene is made up of a DNA. lets say a gene is a functional and physical system that creates habits in you or choices you make. might be difficult to understand but a gene gives you a lifestyle.
~batmans wife dun dun dun...aka ~serenitybella
The mechanisms of reproductive isolation prevent the reproduction of two individuals from different species. The prezygotic mechanisms disrupt the stages of reproduction before the forming of the zygote or prevent the mating at the start, and the postzygotic mechanisms affect the stages of reproduction after the forming of the zygote.
So, the first and the third example (the urchins and the grasshoppers) show the prezygotic mechanism, as the two individuals are not able to mate or form a zygote.
The second and the fourth example ( zonkey and the death of a zygote) show the working of the postzygotic mechanisms, as the zygote is formed, but it seems to be inviable, and the zonkeys are sterile, preventing the individual to reproduce.
