The phenomenon in which the presence of certain gasses in the atmosphere cause higher temperatures is known as O the Gaia hypothesis
O global distillation
O the greenhouse effect
O acid deposition

2. what process do mrna and trna work together to complete? (3 points)

Why are scientists concerned about the depletion of the ozone levels in the stratosphere?

During crossing-over, a. genetic material is exchanged between nonsister chromatids, resulting in new combinations of alleles. b. nonsister chromatids from each homologous chromosome of a tetrad are exchanged, resulting in new combinations of alleles. c. one homologous chromosome of a tetrad is exchanged with another tetrad, resulting in new combinations of alleles. d. sister chromatids from each homologous chromosome of a tetrad are exchanged, resulting in new combinations of alleles. e. genetic material is exchanged between sister chromatids, resulting in new combinations of alleles.