Glassy igneous rocks (i.e. obsidian) are cooled very rapidly.
Answer:
earth worm is really fat and digestive system means u eat some and digesteds
Answer:
m<y= 75
Explanation:
A straight line is equal to 180.
180-105=75
Because, these two angles are attached to each other and same side interior angles.
meassure of angle y is 75
Answer: Sexual reproduction
Explanation:
First, you should understand that mutation (an change in the base-pair sequence of the genetic material, DNA) is the original source of all genetic variation; as such whatsoever will alter the frequency of alleles, even if it is evolution, it relies on mutation.
In contrast, sexual reproduction does not change the frequency of alleles in the gene pool, rather it ensures constancy through the meiotic cell division process
<span>18.) Apparent retrograde motion is the apparent motion of a planet in a direction opposite to that of other bodies within its system, as observed from a particular vantage point. Thus option B is the correct answer. 19) Nicolas Copernicus developed the heliocentric model in the 16th century, which led to the believe that the sun is the center of the Universe, with the planets (including Earth) and stars orbiting it. 20.) A gas giant is a large planet composed mostly of gases, such as hydrogen and helium, with a relatively small rocky core. The gas giants of our solar system are Jupiter, Saturn, Uranus and Neptune.</span>