17. Which of the following events would Not trigger ecological succession in an area? A Changing seasons
B. A river flooding
C. Forest fires
D. A volcano erupting

Which type of bacterial reproduction is depicted in the diagram?

For a comparative or experimental investigation, scientists often make a testable about a scientific question, and then they test it in the investigation. a.control b.hypothesis c.procedure d.system

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.