Three gases are found in Earth's atmosphere : oxygen
Carbon dioxide and nitrogen.
What is their order of
abundance from greatest
to Least ?​

2. in dragons, a gene on chromosome 1 codes for wing color and a gene on chromosome 2 codes for body color. draw out the stages of meiosis for these two chromosomes from a dragon that is heterozygous for both traits. define your alleles. what are all the possible allele combinations of the gametes produced?

When proteins are being produced by a cell, scientist say that the genes are question 2 options: activated turned off replicated deactivated

Describe characteristics of a good respitory surface