Identify the body cavity in which each of the described activities takes place. Blood within veins gives up carbon dioxide and picks up oxygen:
Food is digested and its nutrients are absorbed:
A human baby develops before it is born:

Marijuana is an example of a(n) drug

Which respiratory measurement as useful in differentiating between obstructive and restrictive pulmonary dysfunction

Which of the following represents a difference between viruses and viroids? a) viruses infect many types of cells, whereas viroids infect only prokaryotic cells.b) viruses have capsids composed of protein, whereas viroids have no capsids.c) viruses have genomes composed of rna, whereas viroids have genomes composed of dna.d) viruses cannot pass through plasmodesmata, whereas viroids can.