Of the following, which is the best scientific hypothesis for the question, "How do bees help pollinate flowers?"
A) Bees are attracted to flowers by both color and smell.
B) Bees help transfer pollen as they visit flowers to eat the pollen and drink the nectar.
C) Bees can see light-colored flowers better than dark-colored flowers.
D) We should help bees survive by planting more flowers that provide nectar and pollen.
B
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What are the general characteristics of the CO2 data set? What are the maximum and minimum CO2 concentrations shown in Figure 18.4.? When did the minimum value occur? When did the maximum value occur? What is the general trend in CO2 values?
What will be an ideal response?
What is a hydrothermal vent? What process is involved in their making? Who is responsible for
discovering these vents? What will be an ideal response?
Referring to Figure 14.7.2, North America uses ________ water per capita than any other region of the world. Figure 14.7.3 provides insight that this is primarily due to ________
A) less; industrial usage B) much more; industrial usage C) much more; agriculture D) less; agriculture E) much more; municipal usage
Which of the following is not correct regarding loess?
A) It consists of fine-grained clays and silts and can form vertical cliffs. B) It serves as good agricultural land. C) It is derived from glacial outwash plains or deserts. D) It has low binding strength.