AP BIOLOGY

Detailed explanation-1: -Blue-green algae are producers.

Detailed explanation-2: -Plants and algae (plant-like organisms that live in water) are able to make their own food using energy from the sun. These organisms are called producers because they produce their own food.

Detailed explanation-3: -Producers, such as plants and algae, acquire nutrients from inorganic sources that are supplied primarily by decomposers whereas decomposers, mostly fungi and bacteria, acquire carbon from organic sources that are supplied primarily by producers.

Detailed explanation-4: -Blue green algae are producers.

Detailed explanation-5: -Green plants produce food by photosynthesis. Hence, they are known as producers.