Which of the following occurs in the upper respiratory system?

A) air enters the alveoli

B) air enters the bloodstream

C) air is filtered and moistened

D) air is delivered to muscles

Which of the following statements correctly defines biotechnology? -the process of cutting DNA into fragments and inserting the fragments with a desired gene into another organism of the same or different species -a field of biology that uses

What Percentage of greenhouse gasses were produced In the early 1900's?

Who ever writes the most funny and random response will get brainiest.

The process in which birds spread oil on their feathers using their beaks is called ___. a. preening c. brooding b. molting d. none of the above

Which compound plays a pivotal role in both the first and last step of the TCA cycle? a. pyruvate b. oxaloacetate c. oxalate d. glycerol e. acetyl CoA

Why are many trials taken and averaged in an experiment?

Northern flickers are woodpeckers of the eastern United States. Males, but not females, have black feathers that resemble a moustache extending from the bill along each side of the head.

The following are features of mitosis or meiosis. can you put them in groups. im so confused : allows for transmission of chromosomes to offspring, necessary for growth and regeneration, allows for regeneration of an organism, two identical diploid

Who signs a death certificate

It is appropriate for clients diagnosed with type 2 diabetes to take oral antidiabetic agents and forego recommended dietary changes.