Answer:
At 0 years, an event took place which is known as metamorphosis of igneous rock i.e., formation of igneous rocks from melted magma.
Strontium-90 is a radioactive element which undergoes beta decay to form yttrium-90. It has a half life of approximately 28 years and decay energy of 0.546 MeV. This radioactivity is used by geologist to estimate the age of the rock, fossils, meteorites etc. Other radioactive elements used by the geologists are carbon-40, potassium-40 etc.
Radiometric clock is set when the rock was formed in the past i.e., the moment when an ingenious rock was solidified from molten magma.
Most plants grow from seeds. These seed plants fall into two groups, <u>angiosperms</u> and <u>gymnosperms</u>.
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Answer:
compare and contrast of using solar panels versus wind turbines be sure to include how each works the cost of development in a general community/basic procedures for installments connections at a home etc
Explanation:
The answer is D. Mutualism
