The male parent has F1F3 gene versions while the female parent has F1F2 gene versions. Offspring D has F2F3 gene versions and has the trait for high silk flexibility. This is a trait that neither parent has.

the overall balanced equation

6co2 + 6h2o > c6h12o6 + 6o2

sunlight energy

where: co2 = carbon dioxide

h2o = water

light energy is required

c6h12o6 = glucose

o2 = oxygen

its b. greenhouse gasses trap uv rays for heat so that the plants stay alive.