If carbon dioxide, methane, and water vapor were not in the atmosphere, then what

What happens when the cell copies its chromosomes

Body systems are not completely independent they integrate and work together describe one example of the integration between body systems

Trees with light brown bark dominate an ecosystem the ecosystem has populations of insects that thrive on the tree bark over time some insect species developed certain physical characteristics that them thrive on the tree bark these physical characteristics also the insects defend themselves from predators which insect species is probaly the species with the new physical characteristics?