What is the difference between a habitat and an ecosystem?

Does mitochondria still meet the definition of a eukaryote why or why not?

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.

The idea of spontaneous generation was disproved by in a experiment involving jars of meat