Answer:
A mutation is a change in a DNA sequence. Mutations can result from DNA copying mistakes made during cell division, exposure to ionizing radiation, exposure to chemicals called mutagens, or infection by viruses.
Explanation:
Answer:
It depends on the temperature under earth's surface for the land movement on the surface (for example earthquakes happen from the pressure and movement of tectonic plates). When gravity pulls down rocks inside the layers a new seafloor spreads on the surface.
Explanation:
Answer:
It slows down the entry of heat through the walls and ceiling.
Explanation:
Insulation is a poor conductor of heat.
Thus, it takes a long time for the heat of the sun's rays to penetrate to the inside of the building.
If the building was cool to start with, insulation will help it stay cool longer.
Answer:
Carbon dioxide
Explanation:
The carbon combines with oxygen to form carbon dioxide (CO2) and is released back into the atmosphere as a waste product when animals breathe and exhale.
Answer:
B. Second
Explanation:
In the second trimester the bony parts of the skeleton begin to form
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