Answer:
Half-Life is the time for a substance (U-235 in this case) to decay to 1/2 its original mass.
Since the problem is asking for the time for U-235 to decay to 1/2 its original mass (100 grams to 50 grams) then the decay time is 1 half-life, or 700 million years.
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The condition would most likely be Glomerulonephritis.
Answer:
-It ensures life on Earth can exist.
-It is used by plants for photosynthesis.
-It is the main component of many biological components, including blood.
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Answer:
See Explanation
Explanation:
Higher level taxon indicate larger numbers of sub-taxon. This means that time must have passed, allowing sub-taxon to evolve. Therefore, larger, higher taxon must be older to allow sub-taxon to appear.
