Why does life grow when the flask is broken? HOMEWORK DUE TODAY I REALLY NEED HELP

What's wrong with this ecological pyramid? (multiple choice)1. secondary consumers should be at the bottom of the pyramid2. the sun has an arrow leading to decomposers 3. primary consumers should come after the sun4. energy retained should increase from the bottom to the top5. the sun should be at the bottom of the pyramid

Sarah and john are having a discussion on genetic diversity sarah believes it happens over a long period of time john believes it happens immediately who is correct

We live in the cenozoic era, and scientists know more about this era and the epochs it's divided into than any other time period. why is this? a. we know more about the cenozoic era because this is the only era that has had a wide diversity of species living on earth. b. we know more about the cenozoic era because the planet's poles reversed magnetic fields at the beginning of this era. c. we know more about the cenozoic era because fossils don't exist to document previous eras. d. we know more about the cenozoic era because this is the most recent time period in the history of the earth, and we have more information available to study.