Select all that apply. Which of the following statements are true?
A purebred organism can either be TT or tt.
Recessive genes will sometimes be masked by dominant genes.
The combination of two genes determines the genetic trait of an organism.
It is possible for two genetically different plants to have the same phenotype.

im not in connections yet but i might can you some questions. what grade are you in?

answer: ice crystals in air

the water from the water body or another source of water gets evaporated as water vapor as an effect of heat on water. these water vapor rises in the upper layers of the earth atmosphere under high atmospheric pressure. the atmospheric pressure of these water molecules starts to decrease due to the effect of cold air. the invisible water vapor condenses into visible water droplets and ice crystals.these ice crystals and water droplets being less denser than the surrounding air floats on air as clouds.

if you listed your answers right then i believe your answer is b.