Genes are segments of DNA which form chromosomes. Chromosomes are segments of DNA.
Answer:
An active transport requires energy, a passive transport does not.
That's all! Hope that helps :)
Meisosis helps skin fix itself after it's been cut
C, pretty sure due to natural selection and theory of evolution
This is possible because when a star dies, it basically expands to its maximum (explodes). Therefore, the materials of the exploded star mix with the primeval hydrogen of the Universe. Later, other stars are formed out of this mixture. Thats also how the sun was formed. :)