D is the right answer for this question on e2020
The answer is B. Food
The energy taken in by the whale through the food it consumes enables a whale to move it's fine in the ocean.
B.
Viruses are classified as biological agents instead of a living things, $& they are only made of genetic material.
It is using rotation movement
but to pry something open with a screwdriver like a lid of a paint then it is used as a lever,hope this helped
Answer : B) In step 2, there was a chemical change which was observed in sugar.
Explanation : In A step 2 there was a physical change that was seen. By just boiling the dissolved salt solution salt was obtained. Therefore, it is a physical change. In B step 2 there was a chemical change seen as sugar solution was thickened and turned brown. It was not obtained in its original form; there was a chemical reaction that took place during sugar evaporation. As chemical change is the one where the reaction is irreversible.
Therefore only in B step 2 there was a chemical change that was observed.