Preposition Germ Warfare Chapter 3

Germs Warfare Chapter3
When goind into battle, we need to find _____ as much information as possible about the enemy. We need to know who they are, what they look like , and how they will attack us. As successful germs, we know about humans and how to make them sick. Now, they started to know about us and how we infected them.
More and more scientists started to study us. _____ their research and studies, they found _____ that we come in three main types. Some of us are round, like tiny grapes. Round bacteria are called coccus bacteria. Sore throats in humans can be caused _____ coccus bacteria. Other bacteria are rod-shaped. Under a microscope, we look like tiny paper-clips, with rounded ends. Rod-shaped bacteria are called bacillus bacteria. Those of us who are bacillus bacteria can cause serious illnesses like pneumonia, which attacks the humans' lungs and affects their breathing.
The third type of bacteria is spiral-shaped, like aorkscrew. Our spiral soldiers are called spirochaeteas. They can live _____ blood and cause blood poisoning Luckily, even when the humans found out what we were, they could not stop us.
We grow _____ number incredibly fast, by splitting ourselves in half. One of us turns _____ two; two turn into four; four turn into eight, and so on. If there is plenty of food and warmth for us to growin, one bacteria can quickly multiply _____ millions of bacteria in only few hours.
Unfortunately for you, the human body provides conditions for us to multiply qucikly. Scientists grow bacteria _____ dishes filled with agar, a felly made from seaweed, so they can study them.