Biology, 31.01.2020 10:00 laurentsupreme
You have just come back from a three-month-long expedition in the amazon rain forest. as you take off the hat you wore throughout the trip, you notice some unusual particles. always curious, you put one of these particles in a drop of water on a microscope slide and take a look through your microscope. having seen some cells under the microscope before, you recognize that these particles appear to be made of cells. recalling what you have learned about cells, you marvel at the ability of these tiny things to support their life functions. you then remember that they could not easily get much bigger without drastic changes. explain why cells are so small, considering the relationship between surface area and volume for objects of different sizes but similar shapes.
Answers: 2
Biology, 22.06.2019 02:00
Select the correct answer from each drop-down menu. in an experiment, dr. travis examined the effects of calcium intake on osteoporosis, a condition that causes an increased risk of bone fractures. the amount of calcium is variable. the risk of bone fractures .
Answers: 3
Biology, 22.06.2019 05:50
The image below shows a common blood pressure gauge. what does this device do? a. measures the level of oxygen present in the blood b. measures the pressure of blood when the lungs expand and compress c. measures the electrical activity of the heart d. measures the pressure of blood when the heart contracts and relaxes
Answers: 2
Biology, 22.06.2019 13:20
There are only about 250,000 known fossil species. true or false
Answers: 2
You have just come back from a three-month-long expedition in the amazon rain forest. as you take of...
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