Answer:
You might be sad about something that happened in the past or your scared about making friends... :(
Explanation:
Meds might help with depression tho...
Answer:
a.
Explanation:
It decreases from the aorta to the vena cava.
Answer:
good and yes I agree we need positivity
Answer: b. DNA
Explanation:
DNA is a genetic material commonly found in all living beings. It is present in a thread like structure that is called as the chromosome. The DNA is double helical structure which exhibits the segments of small units called as the genes. The gene is a hereditary material which encodes for a particular protein. Each gene is responsible for determining a particular trait in living beings.
Acute exposure to high altitude can affect the cardiovascular system by decreasing oxygen in the blood (acute hypoxia). It also increases demand on the heart, adrenaline release and pulmonary artery pressures.
I hope this helped:)))
