the first answer as blood needs to be oxygenated to be passes round the body then when its deoxgenated it will return to the heart to be pumped around the body again
Answer:
The ecosystem would collapse if producers were removed.
Explanation:
The primary consumers populating would decrease due to lack of food and if a species doesn’t have food they most likely won’t reproduce. The secondary consumers won’t have enough food either because their prey being the primary consumers would die off. All this leads to the down fall of ecosystem.
