Hello!
I believe the best answer to your question would be Option C) excess carbon dioxide.
Hope this helps, and have a lovely rest of your day :)
A dominant trait can be shown both when an organism is homozygous dominant AND heterozygous. Two different genotypes give the same visible result so a testcross is needed to be able to accurately say if the organism is homozygous dominant or heterozygous
my guess is B. I am probably wrong
Fats and Proteins can be used as a supplement for energy if sugar is not available.
Hope I helped :) <span />
