I need help asap PULMONARY CIRCULATION

when we talk about ‘pulmonary’ we are talking about .
can someone fill in the black for me

Why do you think the puppy litter was all dark-haired?

What is true of all organisms in the kingdoms protista, plantae, fungi, and animalia? a. they are multi-celled. b. they are photosynthetic. c. they have cells that contain membrane-bound organelles. d. they contain cells that lack membrane-bound organelles.

What is a sex-linked genetic disorder that disrupts the blood's ability to clot? a.achondroplasia b.huntington's disease c.hemophilia d.albinism