<span>Tropics
A lot of rain falls there, so the possibility of acid rain and smog which can be carried by warm humid air can also form. </span>
There are various imaging techniques in collecting information about the brain and its adjacent structures. To enumerate, there are the cranial ultrasound (for children with cranial sutures that are not closed yet), cranial CT-scan, cranial MRI, brain PET scan, and cranial functional MRI. Only the brain PET scan and cranial functional MRI can collect information about the brain function by detecting fluorodeoxyglucose (FDG) in the brain as this lights up in functional areas of the brain in PET scan; and by detecting brain activity through changes in blood flow in cranial functional MRI.
<em>While it is not an imaging technique, electroencephalogram or EEG can detect brain function.</em>
<span>ph measures the degree a substance is an acid or a base.</span>
Your answer would be Why are Sea Lampreys a problem in the Great Lakes?
In the text, it explains the answer for this question. For the other three questions, it's asking for a factor of the paragraph rather than the whole thing. The whole paragraph explains the answers for all of the questions, so it's best to ask why are they causing problems.
Over the years he studied their beaks grew longer makeing it able for them to eat diffrent types of seeds and fruits.
