When population growth increases in an area, what is happening to the  birth rate  and  age structure  of that population? a. increasing birth rate with a greater number of young organismsb. increasing birth rate with a smaller number of old organismsc. increasing birth rate with a smaller number of young organismsd. increasing birth rate with a greater number of old organisms 

Zoo geographic regions are characterized by the presence of specific groups of animals these regions are determined by the taxonomic or phylogenetic relationships of animals. the map shows the zoogeographic regions proposed by the naturalist alfred russel wallace in 1876. the similarities of organisms in which two areas numbered above provide the best evidence for common ancestry between the organisms in both locations ?

What was the purpose of mendel's experiments with dihybrid crosses? a. to determine if dna was a transforming factor b. to determine if traits could be recessive c. to determine if traits affected each other d. to determine if traits had more than one allele

How can an organ, such as the lungs, work for multiple body systems?