I think it mite be d.....hope this helps!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
D). Carcinogens are chemical factors in an organism's environment that can cause spontaneous mutation.
Is called the Glottis. Hope this helps:)
Answer:
B
Explanation:
The lung not being not been able to exchange and remove the carbon dioxide created a health problem due to the concentration of hydrogen ions (H+) being 10X being higher than in normal body. Although the difference is just about 1, it will result increase hydrogen ion concentration 10 times, similarly an increase or decrease in pH from 4 to 2 will give rise to 100 times increase in hydrogen ion concentration. It can equally be applied to hydroxyl in concentration.
Answer:this area experienced warming temperatures and significantly reduced rainfall, resulting in the formation of the Sahara Desert.
Explanation: hope this helps <3
