Every cell is surrounded by a thin membrane what is the main function of this cell membrane

Which of the following is not a possible effectof increasimg carbon dioxide levels in the atmosphere ?

To determine if a particular plant is homozygous or heterozygous, you would have to test cross with a

1. in a certain species of plant, the color purple (p) is dominant to the color white (p). according the punnett square, what is the probability of and offspring being white? 50%25%0%100% 2. in a certain species of plant, the color purple (p) is dominant to the color white (p). according the punnett square, what is the probability of and offspring being white? 0%100%50%25%(picture 1 is for question 1, and picture 2 is for question 2)