All of these are complex machines except a bicycle

a bottle opener

a drill

a circular saw

ASAP PLZZ

FOR SCIENCE LOVERS
BRAINLIEST FOR THE BEST ANSWER

I think it's a bicycle .

Explanation:

hope it works out

a) electrical > light, sound, and thermal< < < <

) the mechanical energy of the firefighter moving.< < < < a) electrical > light, sound, and thermal< < < <

c) both a and b.

first thing first of the answer is with technology. second thing second thing is that the big bang theory did not happened u see they say it did but what they dont realize is that like dinasures are still a round they might deny it but they and look at these 12 foot human skelteons they find lets see didnt the bible say something about giants. hope this peace.