A group of awesome students in Mrs. Dunlap's class were testing the amount of fertilizer that would best promote the growth of tomato plants in a garden.
Which of the following could be an unavoidable source of experimental error? *
genetic variation in the tomato plants
fertilization during the study
length of the study
cost of watering the plants

Ascientist and her team counted 200 individual deer in an area of 10 square kilometers. what is the population density?

The graph below compares the rates of reaction of a burning candle and an exploding firework. comparing chemical reactions what can you conclude from the graph? the reaction that causes a firework to explode requires less energy to start, and occurs more rapidly than the reaction that causes a candle to burn. the reaction that causes a firework to explode requires less energy to start, and occurs less rapidly than the reaction that causes a candle to burn. the reaction that causes a firework to explode requires more energy to start, and occurs less rapidly than the reaction that causes a candle to burn. the reaction that causes a firework to explode requires more energy to start, and occurs more rapidly than the reaction that causes a candle to burn. mark this and return

According to this food web which of the following would be considered primary consumers