25.The diagram shows some organisms in an Antarctic food chain. Sun-Algae Krill Cod-Seal-
Which BEST describes the role of krill in this food chain?
A. producers
B. decomposers
C. primary consumers
D. secondary consumer

Blood pressure the total amount of blood the heart pumps in one minute 2. cardiac output the number of times your heart beats in a minute 3. dilate the amount of blood that the heart can pump in a single beat 4. heart rate the force exerted on the walls of the blood vessels by the blood that moves through them 5. stroke volume to widen or get larger in size

With physics question #5? for any !

What do we mean by the event horizon of a black hole?