3 points A scientist is investigating the effects of a new medication on blood
pressure. Different groups of patients will receive different amounts of the
medication over the course of a month. Their blood pressure will be
measured every day. A control group will not receive any of the
medication. What is wrong with this experiment? *
The experiment does not have a dependent variable.
The control group should also receive the medication.
It will be impossible for scientists to repeat this experiment because no two study
groups are the same.
It is impossible to correlate a medication with blood pressure because there are so
many variables that cannot be controlled.

What statements describe a host organism?

Which line in the graph above best illustrates an effect of the carbon dioxide level in the blood on breathing rate before, during and after a period of exercise? 1.b,2.c,3.a,4.d

Atree root breaking a rock into smaller fragments is an example of both and mechanical weathering. when rocks are exposed to heat, they which can contribute to thermal stress. when harmful gases, such as sulfur dioxide and nitrogen oxide, react with water in the atmosphere, they can produce the agent of erosion involved in stream erosion is when the ground is so saturated that it can't absorb rainfall or when rain falls so quickly that the ground can't absorb the water, forms. a/an is a huge, heavy, moving body of ice that picks up rocks and sand and erodes the ground beneath it as these materials scrape across it. hot arid climates are prone to erosion by rows of trees and shrubs planted to protect fields from wind erosion are known as