Discover Questions

As can I login? The elements in group 1 of the periodic table form ions. What is the charge on these ions? Why is a rocket able to pass through the atmosphere without getting burnt even though it is made of metal and metal burns? Equation of the line parallel to the graph of equation y+2x-4=0 and passing through the point(1,-3)
y+2x=1
y+2x+1=0
y=-2x-1
y=-2x+1
y=-2x-3? Compare and contrast the patterns of life the Paleozoic era to the Mesozoic era. What are the major differences between these two eras?