What do we call steps in a food chain

Each step in a food chain or web is called a trophic level. It refers to the mode of nutrition at that level.

Explanation:

For example, a producer or autotroph is an organism capable of converting simple inorganic compounds into organic compounds like glucose that can be used by other organisms as food.

answer: oof wait

explanation:

blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium of the heart. as the ventricle contracts, blood leaves the heart through the pulmonic valve, into the pulmonary artery and to the lungs where it is oxygenated.