describe the personal protective environment you use in the laboratory and why is it necessary. include procedures you use to protect both yourself and the microbes from contamination

Johnny rode his bike to a friend's house 4 blocks down the street in his neighborhood. he immediately rode back home once he realized his friend was not able to play. what was his displacement for the total bike ride? how did you determine this? what could we use as a reference point to determine he was in motion during his bike ride? why can you use it as a reference point

Identify the examples in which sam interacts only with natural resources

What is the compliment dna strand to the following sequence: ttgactaggcta