A student drew this model to show the gas exchange in the human body. What are the weaknesses or inaccuracies in the model the student created?

"do a testcross with a homozygous recessive plant."

kelp are large brown algae that live in cool, relatively shallow waters close to the shore. they grow in dense groupings much like a forest on land. these underwater towers of kelp provide food and shelter for thousands of fish, invertebrates, and marine mammal species.

e) all of the above