The half-life of an element (A) is 20,000 years. Another element (B) has a half-life of 100,000 years. Which of the following elements will be found in a higher concentration after 200,000 years?

Which macromolecule catalyzes chemical reactions this be considered enzyme chemical reactions thus he considering enzymes

Explain the significance of meiosis in sexual reproduction

Atest cross can be used to -predict the phenotypes of a monohybrid cross -predict an unknown genotype of a purebred dominant plant -cross-breed dominant and recessive plants -give probabilities that a trait will appear