Answer:
Metaphase
Chromosomes line up at the metaphase plate, under tension from the mitotic spindle
Answer:
the life cycle of a frog consists three stages : first stage is egg and second stage is larva and the final stage is adult
Answer:
A-Shelter, the others are for enjoyment while shelter takes care of your physical state
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.