Which data table describes the sun?
a.
composition mostly frozen nitrogen
mass 258.9 × 1018 kg
b.
composition mostly hydrogen and helium gas
mass 1.989 × 1030 kg
c.
composition fine dust, metals and minerals, and volcanic rock
mass 6.4 × 1023 kg
d.
composition central iron core surrounded by rock, similar to earth
mass 4.9 × 1024 kg

How are tumors cells different from normal cells

Asmall number of finches are removed randomly from the wild and placed in a protected bird area. they are given as much food as they need and have plenty of space. why would natural selection not occur in this population? a. there is no reason for genetic mutation to occur. b. the birds compete for limited resources, c. the population has not reached carrying capacity. d. there is no genetic variation in the finches.

Why does the skin of your finger shrink when you wash clothes for a long time?