Biology, 28.02.2020 19:39 ryrytkg8091
What is the difference between a countercurrent multiplier system, such as the one involving the loop of Henle, and the countercurrent systems that maximize oxygen absorption by fish gills or reduce heat loss in endotherms?
-a. A countercurrent multiplier system involves movement of ions rather than movement of oxygen or heat transfer.
-b. Unlike the other countercurrent systems, a countercurrent multiplier system expends energy in active transport.
- c. A countercurrent multiplier system includes a capillary bed.
Answers: 2
Biology, 22.06.2019 00:40
Some birds look for food near cattle and other livestock. the movement of the cattle churns up the ground, making insects available to the birds. the cattle appear to be unaffected by the presence of the birds. what kind of relationship exists between the birds and the cattle? o a. parasitism o b. commensalism o c. predation o d. mutualism
Answers: 2
Biology, 22.06.2019 07:30
Which statements best describe the differences or similarities between a comparative investigation and an experimental investigation? check all that apply. experimental investigations are best for showing cause-and-effect relationships, while comparative investigations do not necessarily show this type of relationship. comparative investigations are often impractical and unrealistic, while experimental investigations are the most practical and realistic kinds of investigations. comparative investigations allow for the use of a wide range of variables but do not have a control group, while experimental investigations involve variables that can be controlled. both experimental investigations and comparative investigations are designed to answer scientific questions. both experimental investigations and comparative investigations focus on making observations rather than collecting new data.
Answers: 1
Biology, 22.06.2019 09:00
What causes eclipses? check all that apply. earth's rotation on its axis moon's shadow covering the sun earth's shadow covering the moon earth's orbit and moon's orbit occasionally aligning the moon and sun's gravity pulling in the same direction
Answers: 3
Biology, 22.06.2019 12:20
Agene editing technology called crispr-cas9 uses cellular machinery to change the cell's genetic material. how might this technology be useful in treating diseases like cancer?
Answers: 3
What is the difference between a countercurrent multiplier system, such as the one involving the loo...
Social Studies, 22.02.2020 03:31
Mathematics, 22.02.2020 03:31
Mathematics, 22.02.2020 03:31
Mathematics, 22.02.2020 03:31
Mathematics, 22.02.2020 03:32
English, 22.02.2020 03:32
Computers and Technology, 22.02.2020 03:32
Mathematics, 22.02.2020 03:32
Computers and Technology, 22.02.2020 03:33