Why is the tundra the most fragile biome? a- extreme conditions
b-large human population
c-vast food web
d-large amounts of rain, washing pollutants into water sources

The reactions that occur in the ribosome, where amino acids are combined to form proteins are anabolic or catabolic?

For a comparative or experimental investigation, scientists often make a testable about a scientific question, and then they test it in the investigation. a.control b.hypothesis c.procedure d.system

In general, characteristics that an organism survive and reproduce become more common over time. what mechanism of evolution causes this?