1. The two Paramecium species were grown alone then grown together in a culture. Based on the graphs,
what can you conclude about the population density
when they are grown separately?

Mountains are usually formed at what are called convergent plate boundaries, meaning a boundary at which two plates are moving towards one another. ... Sometimes, the two tectonic plates press up against each other, causing the land to lift into mountainous forms as the plates continue to collide.