An orphaned female lion joins a band of lions. the addition of her genes to their gene pool is natural selection gene flow genetic drift recombination

Which of the following does not describe a physical property of iron? a iron is silvery-white or gray in color. b iron has a boiling point of about 3,000°c. c iron is a magnetic element . d iron and sulfur react to form iron sulfide.

The concept of keystone species is controversial among ecologists because most organisms are highly interdependent. if each of the trophic levels is dependant on all others how can we say one is most important

What would most likely happen to a unicellular organism if it was exposed to a hypotonic solution for an extended period of time?