How has the discovery of DNA affected the classification of protists? Select three options.

1)Many scientists want to get rid of the kingdom Protista.
2)Some organisms have been moved out of the kingdom Protista.
3)Classification is generally easier and less complex.
4)It has been determined that protists share a common ancestor.
5)Some organisms have been moved into the kingdom Protista.

weight of the box is given as

here this is placed on the inclined of angle 42 degree

now this weight will have two components one is along the incline other is perpendicular to it

so here we need to apply a force parallel to incline opposite to its component of weight

so here the component of weight is given as

here we have

so it requires 75 n force to move it upwards

54 degrees incident angle = reflected angle

angle is from normal turned to line of ray

1 is a answer of a question

the answer is false. this is because for ice to melt, it requires latent heat of melting. latent heat means heat energy required to change phase without any increase in temperatures. therefore, the ice will take energy from the environment to melt hence atmospheric temperatures will reduce.