in the ant-treehopper study illustrated in the text, why did the scientists assign plants in the study plot to the ants-present versus ants-removed groups at random—instead of, for example, assigning all the plants on the west side of the plot to the ant-present group and all the plants on the east side to the ants-removed group?

(drag each tile to the correct location.) categorize each term as something that is typical of a scientific theory, a scientific hypothesis, or both. - a tentative statement used to guide scientific investigations. - makes predictions about future events. - can be tested by many independent researchers. - based on observations of natural phenomena. - a well-established, highly reliable explanation.

Which best example best demonstrates the importance of having knowledge of evolutionary relationships? a. illustration of a plant b.organ transplantation between species c. blood donation from a human d. do you need sequence of an insect.

Explain what a zygote is. use the terms egg cell, sperm cell, and fertilization in your explanation.