The amount of carbon started out high. Now the amount of carbon air is decreasing. Is the model ecosystem now in sunlight or is it covered? What is happening to the number of energy storage molecules in the plants and animals as a result?

Write a paragraph explaining why the effect of mutations can vary widely - from neutral to harmful to beneficial

What would be the result if crossing over did not happen during meiosis in humans? a. there would be less genetic variation in humans. b. parents would be more likely to look like their children. c. the human population could not reproduce. d. children would have more chromosomes.

Nucleic acid certain protein cell membranes certain carbohydrates