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SERAI ROBIN - Variables Worksheet Part 2 ☆
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Part 2
Questions #4-7 refer to this experiment:
Suzie Q wants to know how different colors of light affect the growth of plants. She believes that plants
can survive the best in white light. She buys 5 ferns of the same species, which are all approximately the
same age and height. She places one in white light, one in blue light, one in green light, one in red light
and one in the closet. All of the ferns are planted in Miracle-Grow and given 20 mL of water once a day
for 2 weeks. After the two weeks, Suzie observes the plants and measurements.
4. What measurements could Suzy make to determine how different colors of light affect the growth of
plants?
5. What is the independent variable?
6. What is the dependent variable?
7. What are the control variables?

explanation:

the largest database of organic compounds lists about 10 million substances, which include compounds originating from living organisms and those synthesized by chemists. the number of potential organic compounds has been estimated at 1060—an astronomically high number. the existence of so many organic molecules is a consequence of the ability of carbon atoms to form up to four strong bonds to other carbon atoms, resulting in chains and rings of many different sizes, shapes, and complexities. the simplest organic compounds contain only the elements carbon and hydrogen, and are called hydrocarbons. even though they are composed of only two types of atoms, there is a wide variety of hydrocarbons because they may consist of varying lengths of chains, branched chains, and rings of carbon atoms, or combinations of these structures. in addition, hydrocarbons may differ in the types of carbon-carbon bonds present in their molecules. many hydrocarbons are found in plants, animals, and their fossils; other hydrocarbons have been prepared in the laboratory. we use hydrocarbons every day, mainly as fuels, such as natural gas, acetylene, propane, butane, and the principal components of gasoline, diesel fuel, and heating oil. the familiar plastics polyethylene, polypropylene, and polystyrene are also hydrocarbons. we can distinguish several types of hydrocarbons by differences in the bonding between carbon atoms. this leads to differences in geometries and in the hybridization of the carbon orbitals.

narendra modi is currently the pm of india

explanation: