Immune System is the system that consists of proteins and cells.
A possible reason for the transition of algae from unicellularity
to multicellularity would be the evolution of multicellularity allowed algae to
develop traits that keep them close to the land and thus a source of nutrients.
The correct answer between all the choices given is the last choice. I
am hoping that this answer has satisfied your query and it will be able to help
you in your endeavor, and if you would like, feel free to ask another question.
I think it’s A blocking pathogen from entering block
Producers are organisms that capture sunlight from the sun to make organic food. Consumers are animals and get food by consuming other organisms. Decomposers break down all dead organisms from a soil bacterium part of the food cycle. Detritivore feed on organic matter. Producers get their food from the sun. And compete with all organisms above them on the food pyramid. A food chain is a cycle pathway of life, relationships among organisms is a mutualism that results in energy. Most energy is lost as metabolic heat, the total heat, and energy wast. Meaning that each level only receives 10% of the energy in the level
Hope this helps if I am wrong please let me know :)