H2 + O2 → H2O
Why does his teacher ask him to balance the equation by including the correct coefficients?
A. to show that most molecules exist in pairs
b. to show that most compounds exist in pairs
c. to show that atoms are conserved in chemical reactions
d. to show that atoms are created in chemical reactions

Can you guys me with this question , and you! : why do you think the breastbone of a bird is so much larger than the breastbone of a cat?

Which statement best describes the relationship between an allele and a gene? question 1 a. an allele is a variation of a gene that can be expressed as a phenotype. b. an allele is the part of a gene that attaches to messenger rna molecules. c. an allele is a segment of a dna molecule that controls replication of a gene.

What characteristic make legumes a good food source for food insecure populations