Which of the following statements is true? the buildup of carbon dioxide in the atmosphere causes the greenhouse effect. an increase in pressure causes an increase in reaction rate. the formation of gas bubbles is an indication of a chemical change. all of the above

*will mark brainliest* certain species of are now recognized as indicators of environmental pollution. a. lichen b. mushroom c. yeast d. none of the above

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.

What are the responsibilities of the region of the brain highlighted below? =+= will rate brainiest =+=