Sally's teacher tells her to find the masses of a sugar cube and a glass of water. sally finds the masses to be 10 g for the sugar cube and 100 g for the glass of water. then, the teacher tells her to put the sugar cube into the water. sally puts the cube into the glass of water and watches as it dissolves. then, the teacher tells sally to estimate the new mass of the glass of sugar-water.
what should sally guess as the new mass of the glass of sugar-water?

Sally should guess that the glass of sugar-water will have a mass of 110 g since the masses from the glass of water (100 g) and the sugar cube (10 g) will combine. it will be 110

i just learnt this recently but i need to look through my notes again

the major pests we deal with are insects, weeds and fungal diseases. a pesticide is a product, whether organic or chemical, used to kill the target pest. there are other techniques gardeners should use that can prevent the severe infestations that make the use of pesticides necessary