Which of the following is true of vertebrates with four-chambered hearts?

During an experiment, readings for blood pressure in a persons body were found to be constant . however , when he measured by a different blood pressure cuff , the readings differed by 15 points for each reading. this difference indicates that the results are

Anormal strand of dna is shown below, followed by the same strand of dna after mutations have occurred.

What will happen to the amount of food available as a pondwater ecosystem ages