Human photosynthesis is highly unlikely , but if everyone on the planet could produce their own food through photosynthesis , we would expect carbon dioxide levels in the atmosphere to decrease . Think of and list two reasons human photosynthesis would reduce atmospheric carbon dioxide levels. Please I need help?​

Human photosynthesis would reduce carbon dioxide levels because it would use the carbon dioxide already in the air and produce more oxygen

Explanation:

Photosynthesis uses Carbon dioxide and produces oxygen so some carbon dioxide would get used up and then the oxygen would suppress the carbon dioxide even more

The offsprings of this punnet square will be Dd, Dd, dd and dd in a ratio 1Dd : 1dd

See attached image for punnet square completion

Explanation:

This question involves a cross involving a single gene with alleles D and d where allele D is dominant over allele d i.e. D will mask the phenotypic expression of d in a heterozygous state.

This cross is between a heterozygous parent (Dd) and a homozygous recessive parent (dd). Parent Dd will produce gametes D and d while parent dd will produce gametes d and d.

Using these gametes in a punnet square, four possible offsprings with two distinct genotypes will be produced. The genotypes are: Dd and dd in a ratio 1:1

Hence, the possibility of having a heterozygous dominant offspring is 1/2 while the possibility of having a homozygous recessive offspring is also 1/2.