B. Lymphokines
<span>Lymphokines are a product of T-cells that act as communicators.</span>
Answer:
Explanation: The talk test is a simply way to measure relative intensity. In general, If you're doing moderate- intensity activity, you can talk but not sing during the activity.
Answer:
bone density.
Explanation:
I used precess of elimination. U cannot improve the bone density by working out. You can improve your cardiorespiratory fitness by doing cardio, e.g. cycling, swimming, running etc. You can improve muscular strength by working out, e.g. push up, sit ups, etc. you can also become more.flexible by expanding ur muscles and tissues.
Magnetic resolution imaging (MRI) and ultrasound.