Point A when inhalation begins
C. 50%
Explanation: in a punnet square the heterozygous and the homozygous recessive cross and make the two genotypes Bb and bb so there for bb would be 50% and Bb world be 50% as we’ll.
If the purple plant was homozygous dominate then it can only pass along a dominate allele to its offspring so despite the genotype of the other parent 100% of the offspring will reprsent a purple phenotype.
Answer: D
D. A community of organisms and the abiotic factors with which they interact (is the best description of the ecosystem).