A biologist collected 1 gallon of pond water and found 50 paramecium. If the lake is 1,000 gallons, how many paramecium would be predicted in the lake? *
50,000
50
500
5,000

50000

Explanation:

number of paramecium in 1 gallon of water = 50

number of paramecium in 1000 gallons of water =

1000× 50 = 50000

a axis of a graph is a color or shade so we can all go outside and have a party so we can eat   some grilled cheese sammiches and broccoli and have some ugly fun times

i don't know why i put this, i know its not the i was just bored : p

delete this answer while you can

i believe it is "they are not used up by reactions" as the answer to your question, text me back if this is correct because i just learned this.