WILL GIVE BRAINLIEST A biologist studies an ecosystem and finds that it has very few trophic levels. What can you conclude about this ecosystem? a. It isn't a stable ecosystem

b. It's a very healthy ecosystem

c. It has no primary consumers

d. It has many producers

something tells me it's not d.

weathering is the answer.

whats the answer to your question?

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.