Answer:
Actually, The ionic charging of : alkali is +1 alkaline earth metals is +2 aluminum is +3. That is the use periodic table to recall the lonic charge of an alkali metal, an alkaline earth metal, or aluminum
Explanation:
Answer:
c
Explanation:
Gas exchange. Gas exchange occurs as a result of respiration, when carbon dioxide is excreted and oxygen taken up, and photosynthesis, when oxygen is excreted and carbon dioxide is taken up. The rate of gas exchange is affected by: the area available for diffusion.
Answer:
B
Explanation:
Light shows duality i.e it shows properties of both particle as well as wave.
During mitosis a cell divides itself creating an identical twin cell
The correct answer is metaphase 11. The chromosomes line up at the equator