Why do physicians monitor a patient's enzyme levels if they suspect that a heart attack has occured?

Individuals do not compete directly for resources, but are prey for the same predator

Cathy hypothesized that corn would not grow in mud. to test this hypothesis, she took corn kernels and placed 5 in mud, 3 in soil, and 2 in water. to her surprise, the kernels in the mud grew faster than the kernels in the soil. what error might have caused these unexpected results? a. wrong hypothesis b. not enough variables c. undefined control d. too many variables

What processes take place before the mature mrna exits the nucleus?