The agent of erosion, which carried sediments that scratched bedrock is A MOVING GLACIER.
Agents of erosion refers to those forces that cause erosion. There are basically four agents of erosion, these are wind, running water, glaciers and gravity.
Glaciers are large sheet or block of ice that move along a landscape. Glaciers are powerful agents of erosion; moving glaciers are capable of removing loose rocks on their way of movement. They can also pick up and move particles of varying size. Moving glaciers usually carry sediments which scratch and polish bedrocks surfaces.
A chemical change is a change in which the composition of the matter is changed at the molecular level, most chemical changes are not easily irreversible, for example, an egg being cooked, the egg changes from its liquid like state to a solid, and it is not possible to revert it back to its original change. The egg itself is changed in this case.
A physical change on the other hand however, is only changing the substance of a matter, not its composition, this is usually easily reversible. For example, water turning into ice, the water's substance changed from its liquid state to its solid state, it is still water, and it can easily be turned back into water by heating it.
Sorry for the long explanation,
Hope this helps!
Fat: 1 gram = 9 calories, Protein: 1 gram = 4 calories, Carbohydrates: 1 gram = 4 calories, Alcohol: 1 gram = 7 calories
From the question given above, a bottle of beer contains 15
grams of carbohydrate, 0 grams of fat, 1 gram of protein and 15 grams of
alcohol.
15 g of carbohydrate = 15 x 4 = 60 calories
0 g of fat = 0 calories
1 g of protein = 1 x 4 = 4 calories
15 g of alcohol = 15 x 7 = 105 calories
60 + 0 + 4 + 105 = 169
Therefore a bottle of beer contains 169 calories.
Answer:
The term nucleic acid is the overall name for DNA and RNA.
Explanation:
They are composed of nucleotides, which are the monomers made of three components: a 5-carbon sugar, a phosphate group and a nitrogenous base. ... The two main classes of nucleic acids are deoxyribonucleic acid (DNA) and ribonucleic acid (RNA).