In utah's arches national park we can see many interesting shapes like this one. many different things to shape this arch: earthquakes, rivers, freezing water, and wind. only one of these made the surface of the arch smooth and rounded. that was a) earthquakes. b) strong winds. c) water freezing in the cracks. d) a river running through the rocks.

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

the enthalpy of formation of water is given as -285.8kj/mol, which states that the enthalpy of formation is negative.

negative enthalpy of formation indicates that the heat is released during the reaction process. the heat is released from reaction to the surroundings the enthalpy is expressed with a negative sign with the energy given out in the reaction process.

the formation of water takes place by giving out heat which is -285.8 kj/mol.

answer carbon and three oxygen atoms;