When Mount St. Helens erupted in 1980, a
portion of the surrounding area was covered by
lava, which buried all of the vegetation. Four
months later, Anaphalis margaritacea plants
were found growing out of lava rock crevices.
The beginning of plant regrowth in this area is a
part of the process known as
(1) species preservation
(2) evolution
(3) biotic competition
(4) succession

i'm gonna put a couple so you can chose from

explanation:

if you know the fur color of the offspring mice, you can use the ratios to identify the genotypes of the parents.

if either parent mouse passes a dominant allele, the offspring will have black fur.

if the parental mice has two different fur color (i.e white and black) , the color of the offspring's fur would be either black, white, or the combination of both (grey)

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what do the different brain waves do?

explanation:

brainwaves are produced by synchronised electrical pulses from masses of neurons communicating with each other. brainwaves are detected using sensors placed on the scalp. brainwave speed is measured in hertz (cycles per second) and they are divided into bands delineating slow, moderate, and fast waves.

it depends on how much it could carry.

the sun creates it's own light, also gives light and life to bunch of stuff like plants,animals,humans etc.photosyntesis is the process of making food which needs sun,water,nutrients etc.