Answer:
that would be false
Explanation:
The right answer is 28 years.
The half-life, or period of a radioactive isotope, is the time required for half of the nuclei of this isotope initially present to decay naturally.
One gram of pure 90 strontium has a radioactivity of 5.11 TBq. Its beta radiation is not penetrating, which makes it difficult to measure when it is in the soil or a matrix. It is very harmful when the particle is inhaled or ingested.
Answer:
Explanation:
A molecule of the compound carbon dioxide contains one atom of the element carbon and two atoms of the element oxygen. Each oxygen atom shares a double bond with the carbon atom.
A. Plants can make their own food using energy from the Sun.
Animals cannot make their own food.
B. Plant cells have cell walls.
Animal cells do not have cell walls
C. Animals and plants have membrane-bound nuclei
Bacteria do not have nuclei.
D.
Protists can be unicellular or multicellular
Bacteria are unicellular
Answer:
A. Plants can make their own food using energy from the Sun.
Animals cannot make their own food.
Answer:
A
Explanation:
Answer:
For this specific star, it would be magnesium
Explanation:
when you look at the spectrum of light for, in this case, a star, you are seeing a specific light signature, like a fingerprint. you have to compare the black lines of the star's light spectrum to the light spectrum of different gasses to see which ones match up. in this case, the lines in star 8's spectrum match the lines in the spectrum of magnesium.
Fission and fusion are nuclear reactions that produce energy, though they are not the same. Fission is the splitting of a heavy and unstable nucleus into two lighter nuclei. Fusion is the process where two light nuclei combine together releasing vast amounts of energy.