Which process forms an ocean trench ?
a) tectonic plates sliding by each other
b) tectonic plates pulling apart
c) tectonic pleas moving together
d) volcanoes pulling up the land

What is earths lithospheric plates interact at

The asian shore crab (hemigrapsus sanguineus) is an invasive species that has impacted the atlantic coast. predict what characteristic of this invader would most likely disrupt the biodiversity of this area.

Legumes, a type of plant, require rhizobia, a type of soil bacteria, to survive since these organisms fix nitrogen during photosynthesis. rhizobia use the legumes for food. what would most likely happen to the legume population if rhizobia suddenly became extinct?