In which of these compounds are there twice as many oxygen atoms as hydrogen
atoms

Environmental differences within ecosystems are generally caused by

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

In a lab, scientists grew several generations of offspring of a plant using the method shown. what conclusion can you make about the offspring? a. they formed from meiosis and mitosis. b. they have half the number of chromosomes as their parent. c. they have low genetic variability among them. d. they will be able to reproduce only after they grow flowers.