Why are algae and ferns both green?

Why is the lenght of a sidereal day and a solar day on earth so similar? Why are electrolytes conductive? What chemicals make up backing soda? What is the common name and chemical formula for Retinol? When two air masses meet at a front air from both air masses typically? IS licl polar or? What carries the code to control the cell? How long is an activation fee? What is xeon's atomic mass? Who is responsible for the for the formation of troops during a chance of responsibility ceremony? What were blue green algae responsible for making? Is sesame a self pollinated or cross pollinated crop? What effect would surgical removal of the seminal vesicles have on the human male reproductive system? Which of these options is the best explanation for why the night sky is dark? How big is a argon molecule? What do scientist use to measure the rate of movement of oceanic plates? How do you build a homemade chain reaction? How much water does a colorful croton plant need per day? Is gasoline lighter than motor oil? Why are gases the worst conductors of all?