follow a procedure

follow the steps

EXAMPLE: When you are learning to do something new, it is important to follow the procedure very carefully.

pose a risk

could be dangerous

EXAMPLE: The thin ice on the lake posed a risk. Don't walk on it. It's not safe!

properly

correctly

EXAMPLE: Children need to learn how to do things properly.

raw

not cooked

EXAMPLE: Raw meat needs to stay in the refrigerator until you are ready to cook it.

sanitation

a system for protecting people's health by removing dirt and waste

EXAMPLE: A garbage collector is sometimes called a sanitation worker. They take our trash away!

chemical

a manmade substance

EXAMPLE: A dangerous chemical was found in the water supply. The water is contaminated. People should not drink that water.

(verb) contaminate

(noun) contamination

to make something dirty or poisonous

EXAMPLE: The chemical contaminated the water. The water is no longer safe to drink.

estimated

(verb) guessed

EXAMPLE: The estimated cost of educating the children of our city is 27 million dollars each year. However, it might be a little more or a little less.

handle

to touch, hold, or pick something up

EXAMPLE: For safety, please don't let children handle sharp knives. They could get hurt.

incident

an event, especially one that is bad or unusual

EXAMPLE: There was an incident in the parking lot yesterday. Someone tried to steal my boss's wallet.

investigator

someone who tries to discover all the facts about something

EXAMPLE: There was an accident at the factory yesterday. Today investigators are trying to find out what caused it.

maintain

to make a situation or activity continue in the same way

EXAMPLE: He maintains good relationships with his neighbors and friends.

presence

the fact of being in a place, to be present

EXAMPLE: I accidentally put salt in my coffee. The salt's presence made it impossible for me to drink the coffee. It tasted terrible!

production

the process of making or growing something

EXAMPLE: Food production is important in the United States. Americans depend on our farmers to grow the food we need to eat.

quantity

amount

EXAMPLE: The refrigerator stopped working yesterday. Unfortunately a large quantity of milk was spoiled. We had to throw it away.

recall

to order the return of something

EXAMPLE: When the company realized their cereal contained glass, they recalled it. If you had purchased a box, you could return it to the store for a refund.

remove

to take something away

EXAMPLE: For safety, it is important to remove chemicals from drinking water.

spoil

to go bad

EXAMPLE: The meat sat on the counter for too long and it spoiled. We had to throw it away so that we didn't get sick.

stage

a step in a process

EXAMPLE: My son and I are working on a school project. It is almost complete. Our project is in its final stages.

substance

a solid, liquid, or gas

EXAMPLE: Water is the most common substance on Earth.

surface

the top or outside part of something

EXAMPLE: It is not windy today. The surface of the water is completely calm and smooth.

thoroughly

very carefully, completely

EXAMPLE: Wash your hands thoroughly before working in the kitchen.