2. How could the duck-billed dinosaur tooth fossil lead scientists to believe that plants also existed in Antarctica?

Which describes the organs in the human body

Which of the following describes an object with elastic potential energy? A.) an iceberg floating in ocean water that is 35°F B.) a boulder teetering on the edge of a steep cliff C.) a bed spring that is pushed together with a weight D.

Which of these is not a part of the circulatory system? 1) heart 2) blood 3) arteries 4) femur

Are there any natural events that could alter the diversity index

The right ventricle transports oxygenated blood to the lungs. true or false.

For finches on the Galapagos a significant change in big size can observed across the years Rapunzel rainfall orchestra how can the changes and finch beak size be attributed to evolution

Which is an immune system

Plants cannot use this component of the atmosphere directly; it must be modified by bacteria first. oxygen carbon dioxide nitrogen water vapor

22) All organisms undergo DNA replication for reproduction, growth, repair, etc. DNA replication occurs just before the process of A) meiosis. B) mitosis. C) transcription. D) translation.

Two genera of birds exist side-by-side on an island. Genus A is characterized by a few species of similar, genetic material. Genus B contains different species of birds with a wide variety of genetic traits.