RrTt means brown leaves and tall stems !
so the answer is D !
I think the appropriate response is Target Heart Rate. It is prescribed that you practice inside 55 to 85 percent of your most extreme heart rate for no less than 20 to 30 minutes to get the best outcomes from vigorous exercise. The MHR (generally figured as 220 less your age) is the furthest reaches of what your cardiovascular framework can deal with amid physical movement.
Answer:
Option A, They contain a thick tunica media
Explanation:
Artery consist of tunics which is made up of three distinct layers
a) The internal layer is tunica intima – made up of epithelial and connective tissue layers
b) The middle layer is tunica media - thickest layer in arteries and consists of layers of smooth muscle supported by connective tissue
c) The external layer is tunica externa - sheath of connective tissue composed primarily of collagenous fibers
Answer:
CO₂, also known as carbon dioxide
Explanation:
In the alveoli, oxygen enters the bloodstream, and carbon dioxide exits, the latter to be exhaled from the lungs.
