1. If 20 g of ice at 0 °C is added to 180 g of water at 22 °C, what will the final temperature of the water be? (3 marks) 2.When a 120 g sample of aluminum (Al) absorbs 9612 J of energy, its temperature increases from 25 °C to 115 °C. What is the specific heat of aluminum? (3 marks)

The independent variable would be the fertilizer as it is what the dependent variable (the growth of grass) depends on.

Stars are born within the clouds of dust and scattered throughout most galaxies. a familiar example of such as a dust cloud is the orion nebula. turbulence deep within these clouds gives rise to knots with sufficient mass that the gas and dust can begin to collapse under its own gravitational attraction. as the cloud collapses, the material at the center begins to heat up. known as a protostar, it is this hot core at the heart of the collapsing cloud that will one day become a star. three-dimensional computer models of star formation predict that the spinning clouds of collapsing gas and dust may break up into two or three blobs; this would explain why the majority the stars in the milky way are paired or in groups of multiple stars.therefor, i would say the answer is: dust and gases contract.i hope this ! < 3

Answerbiological;