Emma is curious to see how fertilizer makes a plant grow larger. after doing some research, she believes that the chemicals within the fertilizer will make a plant increase in size. she also believes that plants that do not receive fertilizer will be smaller in size. emma plans to put the same type of plant seed into 6 pots containing soil and fertilizer and monitor how the plants grow. she runs out of fertilizer, though, and decides to put sand into 3 of the pots instead of fertilizer and soil. after the experiment finishes, emma observes that the plants that had fertilizer grew much larger than the plants with sand. she finally concludes that fertilizer greatly increases the size of a plant. why is her conclusion invalid?

Which table best shows the impacts resulting from human activity? impact of human activities human activity impact forest area cleared to construct an airport increase in oxygen level vegetation cleared to construct an oil mine increase in pollution impact of human activities human activity impact forest area cleared to construct an airport increase in sound pollution vegetation cleared to construct a power plant contamination of water impact of human activities human activity impact beehives cleared from urban areas increase in vegetation dams constructed on a river increase in fish population impact of human activities human activity impact beehives cleared from urban areas increase in bird population dams constructed on a river better quality of water

What causes darkening of the skin as melanin production increases

Recombinant dna (rdna) creates offspring which are genetically identical to the parent is the process of breeding only organisms with desirable traits involves the removal of the nucleus of a cell combines genes from organisms of different species in a lab