What areas can act as carbon sinks? the atmosphere
O the Arctic and Antarctic
O oceans, soils and forests
O all of these

Which type of organism is missing from the food web seen in the illustration? primary consumers decomposers primary producers secondary consumers

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.

Which is an important function of normal flora? a. aid with bone marrow production. b. crowd out pathogenic bacteria. c. destroy digestive track pathogens. d. manufacture iron in the bloodstream.