Secondary transporters, or cotransporters, can be divided into symporters and antiporters. What distinguishes symporters from antiporters

We can use solar powered cars or ride bikes instead of cars that burn fossil fuels

That is false even though water expands when frozen nothing changes at all 

25% or 1/4 of the offspring would have red flowers, 50% or 1/2 of the offspring would have pink flowers, and 25% or 1/4 of the offspring would have white flowers. i crossed rr and rr which are the pink-flowered genotypes to find these ratios.