brain stem is the oldest and most primitive
A primitive animal is a type of organism that is considered to be simple in structure and function compared to more complex organisms. These animals often exhibit features that are similar to ancestral forms, reflecting an earlier stage of evolution. Examples of primitive animals include sponges and jellyfish.
Without the nervous system, we would have only primitive, unintelligent organisms such as sponges and jellyfish. There would be no one to post questions or to answer them. This website would fall out of use.
because if we didnt have them we would all die, because the brain and heart are what keep you alive and they are organisms
If you can consider space a biome, I imagine that would be the place with the least amount of animals.
It depends on what organism you are talking about. Some organisms do not require a brain to "live". Organisms without a brain are usually rather simple and have a limited nimber of functions abailable to them.
The sense of smell can be enhanced by eating healthy and having regular medical check up. The sense of smell usually enhances our ability to taste. The sense of smell usually affects the primitive part of our brain.
To answer this question properly, you would need at least 1,000,000,000,000,000 sentences.
No, "state" is not a precise antonym of "primitive." A more precise antonym of "primitive" would be "advanced" or "sophisticated." "State" generally refers to a condition or how something exists at a certain point in time.
Tertiary consumers receive the least amount of energy from producers.
The mechanism for evolution that was proposed by Jean Baptiste Lamarck was that organisms began life as primitive forms but adapted to their environment and became more complex forms. He also claimed that as time progressed, new primitive organisms were also occurring, so that they may evolve in the future.
Fossils of tropical plants and animals would be least likely found in Antarctica, as the continent's climate and environment are not conducive to supporting such organisms.