The correct answer is "calcium, sodium, potassium, and other minerals".
The term "essential nutrients" refers to the group of nutrients which are necessary for the normal functioning of human physiology but they cannot be synthesized by the human body. This means that these nutrients need to be obtained from external sources. This category of nutrients is comprised of some amino acids, two fatty acids, some vitamins and minerals.
Glucose and cellulose are not part of the essential nutrients. Also, only 9 of the 20 protein-producing amino acids cannot be synthesized by the human body and are therefore considered essential.
Answer:
Hmmm.....firstly it depends which grade ur in....well in general I am ready
The study of the interaction of organisms with each other and their environment involves non-living factors, also called abiotic factors, and living factors, which are referred to as biotic factors.
This study called ecology focuses on several things about the ecosystem, which is a group of organisms interacting with each other and their environment. Ecology is a very broad field that encompasses the study of everything concerning the the world's inhabitants and how they behave in their surroundings.
It is respiration because all living things do it and have to do it because they have to make energy to survive. After all, respiring is just a reaction that makes energy to go into cells, doesn't matter if it's a plant or jellyfish or whatever.