Weathering describes the breaking down or dissolving of rocks and minerals on the surface of the Earth.
The agent that kills bacteria is called bactericidal. Bactericidal agents act directly by destroying the present bacteria. It is also different from bacteriostatic, because bacteriostatic means the inhibition of the spread and growth of bacteria only.
What on earth, please repeat the question clearer
Answer:
Earth's atmosphere is a layer of gases surrounding the planet Earth and retained by the Earth's gravity.
Explanation:
It contains roughly 78% nitrogen and 21% oxygen 0.97% argon and carbon dioxide 0.04% trace amounts of other gases, and water vapor. This mixture of gases is commonly known as air.
Answer:
Las vacunas ayudan a proteger contra muchas enfermedades que solian ser mucho mas comunes. Como tetanos, difteria, paperas, sarampion, tos ferina (tos convulsiva), meningitis y poliomielitis.