How do scientists obtain knowledge about the
world? check all that apply.
going to the field
conducting experiments in a lab
reading scientific literature
making observations
creating models
analyzing data
communicating with other scientists
o
readin
done

its b. greenhouse gasses trap uv rays for heat so that the plants stay alive.

answer n81.2

answer;

-vessels in the chest

the diagnosis of angina pectoris literally means "vessels in the chest"

explanation;

-angina pectoris is the medical term for chest pain or discomfort due to coronary heart disease.it is the chest pain due to an inadequate supply of oxygen to the heart muscle. the pain is typically severe and crushing, and it is characterized by a feeling of pressure and suffocation just behind the breastbone.

agina pectoris is caused by reduced blood flow to your heart muscle. the blood carries oxygen, which the heart muscle needs to survive. when the heart muscle isn't getting enough oxygen, it causes a condition called ischemia