Answer:
A is the correct answer
Explanation:
the existed about 3.8to 4.0 billion years ago
Materials that can be magnetized, which are also the ones that are strongly attracted to a magnet, are called ferromagnetic<span>(or </span>ferrimagnetic<span>). These include iron, </span>nickel<span>, cobalt, some alloys of rare-earth metals, and some naturally occurring minerals such as lodestone.</span>
D is the answer....tornado damage can not be used to determine both the weather and climate of a region
Answer:
Oxygen or Minerals or Sugars (Oxygen is the most relevant one)
Explanation:
To survive, every cell must have a constant supply of vital substances such as sugar, minerals, and oxygen, and dispose of waste products, all carried back and forth by the blood cells. Without these substances, cells would die in a very short period of time.
The stage that scientists begin to ask questions and attempt to explain observations is A. forming hypotheses. This is because a hypothesis is basically a testable question about observations scientists make.
