A botanist decides that he wants to test the effects of ultraviolet light on the growth of plants. Which of the following does NOT need to be kept constant for each of the plants used in this experiment? A. Soil pH B. Air Temperature C. Air Humidity D. Plant growth

Can someone me with this and tell me what’s fracking and what does it have to do with carbon, carbon dioxide, or fossil fuels?

What are two ways that harvesting algae from the ocean may benefit human society? how might the harvest of algae negatively impact the ocean communities where that algae grows? how could this be prevented?

Which of these statements is false? a. others may notice a problem with a relationship before the people involved. b. the first sign of a problem with a relationship is a feeling of anger. c. damaged relationships can be repaired. d. even good relationships can be damaged.