Choose all the answers that apply.

the sun

is the only star in our solar system
is the largest star in the milky way galaxy
is made mostly of hydrogen and helium
will continue to release light and heat forever
has a solid core made of iron and nickel

What causes eclipses? check all that apply. earth's rotation on its axis moon's shadow covering the sun earth's shadow covering the moon earth's orbit and moon's orbit occasionally aligning the moon and sun's gravity pulling in the same direction

Which of the following describes how binary fission and mitosis are similar? a)they are both used for growth or repair b)they both break down membrane-bound nuclei c)both invoke the replication of a single stand of dna d)both replicate genetic material

Which of the following is a responsibility of a scientist