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Biology

Which one of the following conditions is an example of resource partitioning? A. Two species of squirrels—one that eats acorns from the branches and one that eats acorns that have fallen to the ground B. Two species of mice—one that eats seeds and the other that eats insects C. Two species of birds that eat fruit from the same tree D. A species of butterfly and a species of bee that pollinate the same flower

Which of the following fields of study pertains to how human cultures govern and legislate, including environmental laws? Biology, psychology, political science, or economics?

Over the past century, the global sea level has risen by 4 to 8 inches. However, over the last 20 years this increase has been occurring at approximately twice the average speed of the preceding 80 years. __________ is NOT a cause for this increased global sea level. A) Thermal expansion B) Melting of glaciers and polar ice caps C) Ice loss from Greenland and West Antarctica D) An increase in the water present in the water cycle

You are conducting an experiment to determine if increased ultraviolet radiation from the decrease in the ozone layer is killing off frog tadpoles. After examining all of the data available in the library, you decide to go with a hypothesis that increased ultraviolet radiation from the sun is killing off the tadpoles. You design an experiment with a control and an experimental group. Group 1 involves 100 tadpoles in a five gallon container of water, which is covered by glass (knowing that the glass will filter out the ultraviolet radiation). Group 2 will be set up exactly like group 1, except that instead of being covered with glass, it is covered with an acrylic plexiglass, which will not filter out the U.V. radiation. You then place the groups outside for a period of a month, and observe the results. Results Group 1 Group 2 Number of tadpoles 100 100 started with Number finished 96 96 Using this information, answer the following questions. a. What is the experimental variable and what is the dependant variable? b. Does the information from this experiment support the hypothesis? c. If no, then what might be causing the decrease in frog populations? d. Which is the control group, and which is the experimental group? e. What is the difference between the two groups? Should they be different in any other way?

The general term for a large molecule made up of many similar subunits is

Scientists know that all living things, from the smallest bacterium to the largest blue whale, are made of cells. Why is this a scientific consensus? Check all that apply. Many scientists have made the same conclusion. There are alternate explanations for the structure of living things. The idea has stood up to repeated testing. The evidence supporting the idea has been shared and discussed.

seedless bananas were probably first caused by ______.

Which best examples why a wood-burning fireplace represents an open system. A. Because the ashes have to be swept away B. Because a fire requires oxygen from the atmosphere to burn C. Because they can be used for cooking D. Because they are not all made out of brick

In the adult brain, which is the largest region?

_______ aid in the coordination of the activities of adjacent animal cells.

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