Scientists are studying fertilizers to grass grow in southern california. fertilizer is any substance that can be added to soil to plants grow in it. in other words, fertilizer makes soil more fertile. the scientists set up different plots of land that all use the same type of soil, but they use different types of fertilizer in each plot. scientists then measure the grass growth in the different soils over time. how should scientists set up the control group in this experiment? a. a plot with grass but no fertilizer in the soil b. a plot with grass and many types of fertilizer in the soil c. a plot without any grass or any fertilizer in the soil d. a plot without any grass but with fertilizer in the soil
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Biology, 22.06.2019 09:30
Parthenogenesis is a type of reproduction that does not require a mate. it’s rarely seen in birds and higher vertebrates. parthenogenesis involves the formation of a zygote. but this zygote is formed without fertilization. in parthenogenesis, in the absence of a male gamete, the ovum develops directly in the zygote.
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Biology, 22.06.2019 13:00
Blank is a rock with a find dark texture that makes up the oceanic crust
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Scientists are studying fertilizers to grass grow in southern california. fertilizer is any substan...
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