Answer: The producers refers to green plants that carry out the process of photosynthesis in order to produce food for themselves and others. The principal function of producers is to manufacture food for themselves and all other living organisms.
The consumers refers to those living organisms that can not produce their own food and have to depend on the food produce by others. Consumers can be categorized into primary, secondary and tertiary consumers depending on where they are located on the trophic levels. They can also be classified as herbivores, carnivores and omnivores depending on the type of food they eat. The major function of consumers is transference of energy. Consumers transfer the energy they obtain from the food they eat to those animals that feed on them.
The decomposers are those micro organisms that are majorly found in soils.The principal function of decomposers is to break down dead organic matters so that they can be absorbed by the roots of plants. The broken down organic substances serve as nutrients, which the plants used to grow and develop.
These three types of organisms work together in the ecosystem to maintain the balance of the ecosystem.
Could you send the rest of the question please in the comments?
Based on the graphs, the environment must have favoured, by natural selection, the birds with larger beaks because the species of birds have evolved to have larger beaks.
The eradication of insects by disease must have cause starvation to the small-beaked birds hence causing their demise. In addition, the insects no longer compete for fruits with the large-beaked birds. The plentiful fruits lead to the growth of large beaked birds in the population.
Explanation:
Natural selection fits a population with its environment by favouring individuals with advantageous traits. These individuals outcompete the others for resources and stand greater chances for reaching maturity and passing down their genes to the subsequent generation. This is how species evolve with enviromental changes.
Learn More:
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If u meant algae,
Algae form organic food molecules from carbon dioxide and water through the process of photosynthesis, in which they capture energy from sunlight. Similar to land plants, algae are at the base of the food chain, and, given that plants are virtually absent from the oceans, the existence of nearly all marine life—including whales, seals, fishes, turtles, shrimps, lobsters, clams, octopuses, sea stars, and worms—ultimately depends upon algae. In addition to making organic molecules, algae produce oxygen as a by-product of photosynthesis. Algae produce an estimated 30 to 50 percent of the net global oxygen available to humans and other terrestrial animals for respiration.
- https://www.britannica.com/science/algae/Ecological-and-commercial-importance
Yes animals and plants use oxygen in respiration to produce carbon dioxide. All living things carry out cellular respiration 24 hours a day.