What happens during the migration step?
seeds or spores reach a barren area carried by the wind.
the migrated species prevail in the conditions in that area.
the established life forms reproduce to increase the population.
all of the choices

Look at the picture below . what does this picture represent ?

Ageologist determines that a sample of a mineral cant be scratched by a steel nail but can be scratched by a masonry drill bit based on this information the sample mineral has to be softer than

After getting the slide and microscope ready, stella is eager to see the microscopic pond water specimen! she crouches around her microscope and aligns her eye with the microscope’s eyepiece. but she's only able to see a bright white light. at this point, no specimens or cells are visible on stella's pond water slide. after taking a moment to collect her thoughts, stella realizes she can't see any lifeforms because .