When the Earth formed, the radioactive materials that naturally occurred in the environment heated the planet. These radioactive materials generate heat when they decay. This heat generated is then transferred to the surface of the Earth.
The radioactive materials have no role in increasing the gravity of the Earth or poisoning the soil. Moreover, the naturally occurring radioactive materials are still present and has not disappeared.
Hence, the answer is heated the planet.
Answer:
Explanation:
some things that both of them have are:
cell membrane, nucleus, mitochondria, and vacuoles.
Some things that plant cells have only:
cell wall, large central vacuole, plastids, chloroplasts
<span> Unlike primary succession secondary succession occurs in a place where an ecosystem currently exists.</span><span>
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Answer:
a and b
Explanation:
This may not be right, but from what i remember it should be when the moon is aligned with the sun then the tide is highest
<span>Actually the developing offspring in the eight week of pregnancy is medically know as a fetus,Where the lungs of the baby are nearly developed, and baby continues to grow and mature, then reflexes of work starts woking slowly, after which baby prepares itself for delivery in next few days.</span>
