Louis daguerre’s contribution to photography changed which of the following?

1.how long it took to take a picture

2.the types of stands that most cameras used

3.the amounts of light required to take a picture

4.what people took pictures of

Sarah and juan were running in the school track meet. the muscles in their arms and legs them run fast. other muscles that you cannot see were also at work. the most important muscles for this track meet were the muscles in their a) arms. b) eye. c) feet. d) heart.