Answer:
the process which includes as growth, differentiation, respiration, digestion, and excretion during their life time is life process.
Answer:
to stop animals from eating plants
Explanation:
the thorns and spines help protect the plant for example if we touch the plant it hurts same goes with animals
There are only two main types of cells in nerve tissue. The actual nerve cell is the neuron. It is the "conducting" cell that transmits impulses and the structural unit of the nervous system. The other type of cell is neuroglia, or glial, cell.
Primary consumers are those that are herbivorous - they only eat producers. Primary consumers are the link between the base of an ecosystem's chain food - where simple substances are transformed into organic compounds by photosynthesis or chemosynthesis - and the upper layers - where energy is obtained from, mostly, other animals.
If primary consumers were not found in an ecosystem, all other layers of the chain food on that ecosystem would be nonexistent. The ecosystem would only be made by producers.