When two different species of lovebirds makes babies, the offspring are unable to build a nest after they mature. the hybrid offspring therefore do not reproduce. this is an example of?

How did the research presented in the article affect scientists' understanding of the evolution of eukaryotes

What is a gene ? a) a section of a protein that codes for dna. b) the alternate version of a trait. c) the visible trait in the f1 generation. d) a section of dna that codes for a specific trait .

Match each description to the appropriate biome. tropical savanna desert tropical rain forest taiga tundra has sparse vegetation and very cold temperatures located near the equator and contains trees that form dense canopy layers is very hot and dry, and has plants that need little water has cold winters, heavy snowfall and is dominated by conifers has warm temperatures and is dominated by grasses