If a star is considered medium-sized, it is

about the size of our sun

about half the size of our sun

about twice the size of our sun

at least five times the size of our sun

Select the correct text in the passage. the moving continents affect all subsystems on earth. which sentence identifies a potentially negative consequence of shifting continents? the supercontinent pangaea began to break up about 175 million years ago. [during this process, more coastline was exposed as the landmasses separated]. [the rearrangement and displacement of these huge landmasses resulted in the diversity of plants and animals we see on earth today]. [the movement of the plates sometimes leads to earthquakes and tsunamis]. however, over the long course of earth's history, their effects are usually minimal. in oceans, the plate movements usually lead to seafloor spreading. [seafloor spreading often results in the formation of underwater ranges of mountains].

Rocks that contain crystals that are roughly equal in size and can be identified with the unaided eye are said to exhibit a texture.

What first caused people to consider that the continents were once one large landmass?