Identify the condition which causes a sudden rise in pressure, requiring immediate, emergency medical care. The signs are usually serious and may include blurred vision, severe headaches, eye pain, nausea, vomiting, or seeing rainbow-like halos around lights. 

Identify the appropriate error of refraction description

The author’s tone is best described as

Is the matrix 

The third paragraph (lines 47-61) serves which of the following functions?

The author cites a Chinese saying (lines 44-46) to emphasize the

a) If

Which of the following is a disadvantage of using hydroelectric energy?

What types of crops are harvested using a digging machine?

One method to reduce the impact of agriculture on other organisms is to ____________.