A child's gender (male or female) is determined by the chromosome that the male parent contributes.
Females have XX sex chromosomes.
Males have XY sex chromosomes.
A male infant results if the male contributes his Y chromosome while a female infant results if he contributes his X chromosome.
The oxygen in inhaled air passes across the thin lining of the air sacs and into the blood vessels. Which is known as diffusion
<span>Eukaryotic cells contain membrane-bound organelles, such as the nucleus, while prokaryotic cells do not. Differences in cellular structure of prokaryotes and eukaryotes include the presence of mitochondria and chloroplasts, the cell wall, and the structure of chromosomal DNA.</span>
1) B
2) A
3) C
i hope thats right
Lower the usage of industrially based travel, and perhaps more of the more environmentally-friendly public transportational methods, walking, or simply it the usage of carpooling systematic methods.