How this can be prevented/can vaccines help?
What age group is at risk?
Could it be lethal?
Why does this virus happen?
Well, that is true. That technique has been used to identify the radioactive decays in minerals to date back to when they were formed.
The phrase to fit into the blank is "sexual reproduction"!
In sexual reproduction each of the parents produces a gamete and contributes to half of the offspring's genes. This means that the offspring is a unique composition of the two parents.
In contrast, in a asexual reproduction, the offspring would likely have the same genetic code as the parent.
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The answer is c because curies release energy from the radiation
None of the above, arteries pump blood away from heart.
