Which of the following is a chemical reaction?
1.Freezing liquid Mercury
2.Filling a balloon with air
3.Cutting a piece of paper into two pieces
4.Dropping a sliced orange into a vat of Sodium Dydroxide

Which of these organisms have the greatest amount of cell specialized

Which statements describe resources? one of the factors people use when deciding where they will live is the availability of resources. renewable resources have little value for people. resources are unevenly distributed throughout the world. energy is the world resource which has the highest use. the use of nonrenewable resources has decreased in recent history. the use of resources is evenly distributed throughout the world. the world's oil supply will last for the next forty years if its use continues as expected.

During the day, plants produce by splitting water molecules in the light-dependent reactions of photosynthesis. at the same time, plants use cellular respiration to produce some of the needed by the light-independent reactions to make sugars. during the night, plants produce because takes place.