1. its must be B and 2. must be C
Answer: Smoking cigarettes
Explanation: The other options don't cause pollution to form in the air besides smoking, from the particles it creates causing harm and damage to your lungs and fill the air with smoke particles.
Answer:
A, B, F
Explanation:
I believe these are the answers, sorry if it is incorrect.
When the core of a star like the sun uses up its supply of hydrogen for fusion, the core begins to contract in size. The gravitational forces becomes strong and cause the star to reduce in size. as the star contracts, the temperature of the star also rises since the heat is distributed inside smaller Volume now.
Answer:
36 grams of water
Explanation:
mass of H2O = 0.5 x 18 = 9g
