Landfills produce methane, which is a greenhouse gas and contributes to global warming. true or false

How do adaptation affect a species?

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.

The transport tubes for food coming down the plants are called?