In a science experiment, equal-sized populations of two species of earthworms are placed in a terrarium filled with soil. abiotic factors such as temperature and water supply are kept constant in the terrarium, as is food in the form of bread scraps. the population of each species is observed and counted each day. in agreement with the competitive exclusion principle, what is the most likely outcome of the experiment over time? a. only one population will thrive; the other population will decrease to zero. b. both populations will reach the same size, which is the carrying capacity of the terrarium for earthworms. c. one population will be about twice the size of the other. d. both populations will reach the same size, which is about half the carrying capacity of the terrarium for earthworms
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Biology, 22.06.2019 08:00
Two students are working together on an experiment that measures the effect of different liquid fertilizers on the thickness of plantsβ stems. which is most likely to result in the greatest amount of error in their scientific experiment? a.one student measures the plant stem widths by using calipers. the other student measures the widths of the same plant stems again by using a different pair of calipers. b.one student measures the plant stem widths by using calipers. the other student types the measurements as they are taken into a computer spreadsheet. c.one student weighs liquids for the experiment by using a calibrated scale. the other student weighs liquids for the experiment by using a different calibrated scale.
Answers: 1
Biology, 22.06.2019 22:10
Select all the correct answers. for a claim about the natural world to be considered scientific, what attributes must it have? a). it must be open to modification if new evidence doesn't completely support it. b). it must be based on scientific observations that can be repeated in a controlled setting. c). it must be applicable to future events and occurrences. d). it must be consistent with only a small portion of relevant observations or data.
Answers: 2
In a science experiment, equal-sized populations of two species of earthworms are placed in a terrar...
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