Wavelength is measured from crest to crest.
tree rings
Explanation:
A dendrochronologist interprets tree rings to ascertain the age of a particular tree.
Dendrochronology is a a scientific process that involves the dating of tree rings to determine the age of a particular tree.
- It is sometimes called tree-ring dating.
- This method of dating is mostly applicable to woody trees that have large years of growth.
- New rings develops in order to accommodate new structural materials like the secondary xylem and phloem in them.
- The nature of this secondary growth pattern can be used to systematically determine how old a particular tree is.
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Answer and Explanation:
pH values less than 7 are considered acidic, while pH values greater than 7 are considered alkaline (basic).
So, look for soil samples that have a pH value <em>greater</em> than 7.
By looking at the chart, we can see that soil samples <u>B and E</u> would be the best soil to use for Cabbage growth (of the samples provided).
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Answer:
See explanation
Explanation:
Substances are composed of atoms. The combination of atoms in a substance determines the properties that the substance exhibits.
For instance, if atoms of metals and nonmetals combine, they give rise to ionic substance which are mostly solid and have high melting and boiling points.
On the other hand, atoms of nonmetals combine with each other to form covalent substances having low melting and boiling points and high vapour pressure sometimes.
Similarly, the kind of molecules present in a substance also determine the nature of the substance. For instance, the high boiling point of water is attributed to the polarity of the O-H bond. This explains why it has a much higher boiling point than CH4 of comparable molar mass but is a non-polar molecule.
Calcium carbonate (), an insoluble precipitate that could be removed from water by filtration, is created when the calcium ion in hard water bonds with the carbonate ion.
Precipitates may be ionic solids that are insoluble and result from reactions between certain cations as well as anions in water. A precipitate's formation could be influenced by a variety of circumstances.
When calcium atoms gain or lose electrons, they change their charge but also reactivity, forming calcium ions.
Therefore, Calcium carbonate (), could be used to precipitate the calcium ion form a water sample
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