BioFlix Activity: The Carbon Cycle -- Terrestrial Carbon Cycle Drag the labels onto the flowchart to identify the sequence in which carbon moves through these organisms

1. Carbon dioxide enters a plant...

2. A primary consumer...

3. Carbon enters a higher level...

4. Fungi uses...

5. Cellular respiration...

before, trains worked using the steam engine. thus, it uses heat so it is crucial to apply heat balance. the steam engine absorbs energy during the stage of boiling water. so, this is the endothermic reaction. when the steam is used to work the piston, it has to release this energy through running the train. the excess energy is released as an exhaust to the chimney. this is the exothermic process because it releases energy to the surroundings.

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.