Answer: A
I know this because I just took a test on this and I passed with a 99% on my SAT
Usually things overloading your life
Answer: Gasses are exchanged across the alveolar membrane.
The exchange of gasses takes place across the alveolar membrane of the lungs. Our respiratory system are composed of nose, pharynx, larynx, trachea, bronchi, and lungs (alveoli) where gas exchanges between the blood and external environment by diffusion. Moreover, during the gas exchange, the oxygen enters the blood while carbon dioxide enters the alveoli.
Lung cancer, respitory problems, digestive problems, and other cancers.
Answer:
True, I think
Explanation:
Looked it up and this is what I got
"Ecology is the study of interactions among organisms Ecology is the scientific study of interactions among organisms and between organisms and their physical environment. Organisms in the biosphere interact with each other and with their surroundings, or environment. ... The biological influences on organisms are called biotic factors."