Answer: a. Increasing the surface area for diffusion
Explanation:
When the air is inhaled through the nostrils, the air containing the oxygen the air diffuses inside the alveoli. The alveoli are the tiny sacs where air enters and exchange of gases takes place. From the alveoli the oxygen enters into the blood stream. The oxygen is utilized by the cells for respiration. The increase in network and number of the alveoli will increase the surface area for the diffusion of oxygen and hence, will speed up the respiration process.
Answer:
Above
Explanation:
The anthers are always above the stigma.
Answer:
meiosis
Explanation:
meiosis is used to produce gametes for sexual reproduction
I think B because Testosterone happen near the tests
Answer:
a radio uses the reflections of a coil of wire placed in a permanent magnetic field.
