To estimate your maximum heart rate (mhr), subtract your age from 220. a. true b. false

Use this diagram of an animal cell to answer the question. where does the first stage of cellular respiration occur? w x y z

Heat from earths interior and pressure from overlying rock transform the remains of marine sediments into

Which statement about the immune system is false? a. lymphocytes reduce inflammation, b. b cells remember specific pathogens. c. most white blood cells kill bacteria d. white blood cells are made in lymph nodes.