How is the nitrogen cycle important to humans?
a)it produces noe nitrogen that humans can breathe
b)it converts nitrogen into a form that humans can obtain by eating other organisms
c)it produces nitrogen compounds that humans can breathe
d)it converts nitrogen into a form that humans can obtain by absorbing it through their skin

Plz genetic engineering can be applied to many fields including medicine and agriculture. which of the following is a medical application of genetic engineering? a. giving crop plants recombinant dna so that they would be resistant to herbicides. b. examining a persons pedigree to determine whether they can carry a gene for a genetic disease. c. analyzing a persons dna to see how closely they are related to another person. d. certain genes into bacteria so that they will produce a needed medicine.

There are multiple lines of evidence that provide support for common ancestry and evolution. write 3-4 paragraphs describing at least three of them in detail. provide at least one example for each line of evidence.

Which organ controls breathing? lungs alveoli heart diaphragm