Answer:
d
Step-by-step explanation:
dddddddddddddddddddddddddddd
Answer: Josh don't have enough time :/
Step-by-step explanation:
Answer:
131
Step-by-step explanation:
khan academy
Answer:
Nitrogen
Step-by-step explanation:
Nitrogen and oxygen are by far the most common; dry air is composed of about 78% nitrogen (N2) and about 21% oxygen (O2). Argon, carbon dioxide (CO2), and many other gases are also present in much lower amounts; each makes up less than 1% of the atmosphere's mixture of gases. Hope this helped!
Answer:
18
Step-by-step explanation:
they are the same triangle look at corresponding sides. 9+9=18
