What is 0.04 written in scientific notation

4 x 10^-2

Step-by-step explanation:

So the number is written in two parts:

Just the digits (with the decimal point placed after the first digit), followed by

× 10 to a power that puts the decimal point where it should be. In this case you would move the decimal two places back by multiplying it to the negative second power. I hope that helps! :D

the first one is eubacteria the second one is both the third one is both and the fourth one is archaebacteria

Explanation:

i just did it sorry im late