Which cycle causes an algae bloom, which leads to eutrophication? Sulfur

Phosphorus

Both

Describe at least 2 abiotic and two biotic factors found in the desert biome how do these abiotic factors interact with the biotic factors

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.

Why are scientists concerned about the depletion of the ozone levels in the stratosphere?