Which three sentences describe ways that droughts harm savanna ecosystems?

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.

Explain the significance of the increased cell specialization of the volvocine line

When a doggo starts to pace around in the same line for a hand full of days. what would that mean?