Answer:
pulmonary vein
Explanation:
The pulmonary veins
transfer oxygenated blood from the lungs to the heart.
It helps complete the pulmonary circuit, by receiving oxygenated blood in the alveoli and returning it to the left atrium.
Answer:
weed(s)
Explanation:
it’s a plant that is out of place, undesirable, or an annoyance because it interferes with agricultural or animal production.
hope this helped!
Your right it is mutation
Temperature and pH levels are both correct
