Answer:
Radiometric dating methods
Explanation:
Absolute dating is the process of determining an age on a chronological or specified time scale in which events occurred in archaeology and geology. Absolute dating can be determined by using properties of the atoms that make up materials.
The most common method of absolute dating uses by geologists is radiometric dating methods which is based on the natural radioactive decay of certain elements such as potassium and carbon found in the rocks. By comparing the ratio of parent isotope with a known half-life to daughter product in the rock, the age of the rock can be determined.
The carbon-14 isotope is used in radiocarbon dating, but is only useful for measuring recently formed rocks in the geologic past. The decay of Potassium-40 isotope known as potassium-argon (K-Ar) method allows dating of materials that up to 1,000 billion years old.
D oxygen there was no free oxygen on the earth
The speed of sound wave is slower than electromagnetic wave.
Answer:
The offspring will be purple and long
Explanation:
Radish flowers = Red, purple, or yellow
For a cross between a red-flowered plant and a white-flowered plant to yield all-purple offspring, that means either the red or white is dominant and the other recessive.
When cross it will result in 16 progenies.
There is an attachment to this answer to further clarify the answer.
In the case of the large forest fire burns in Canada, the option that is known to be true is option B: . The Greenland glaciers will melt faster.
<h3>How do wildfires affect glaciers?</h3>
A new study has shown that the exposure of glaciers to any kinds of wildfire smoke can lead to the glaciers melting faster than normal.
Note that this often affects mountain runoff that gives the main freshwater resources for all of life downstream.
Hence, In the case of the large forest fire burns in Canada, the option that is known to be true is option B: . The Greenland glaciers will melt faster.
A large forest fire burns in Canada, dropping black carbon on Greenland. Which of the following is true?
A. The Greenland glaciers will be protected from melting as the ash will insulate the ice.
B. The Greenland glaciers will melt faster.
C. The black carbon will not affect the Greenland glaciers.
D. It is unknown as to what effect the black carbon would have on the Greenland glaciers.
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