Answer:
summer is caused by earths closeness to the sun
Answer:
Helping maintain homeostasis and speech production
Explanation:
Answer:
here is four.
Explanation:
Warmth, moisture, pH levels and oxygen levels
it wont et e answer i will edit it in the commetns
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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