What pair of statements about blehert's and behr's work represent an observation that was first made directly in the field and then a repeat, reinforcing observation made in the lab?

In the human body fibrinogen is necessary for sealing cuts and stopping the loss of blood. since fibrinogen is made of chains of amino acids it is an example of which type of organic molecule

Which of the following is a common danger of commercial fishing?

When a human or animal consumes food, the carbon in that food is most likely to be converted into which of the following elements? a. carbon remains carbon b. nitrogen c. oxygen d. hydrogen